adaptation - MHSchoolExample: A ﬁ sh uses its gills to breathe in water. Ask: Why are gills...

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ISBN-13: 978-0-02-284227-7ISBN-10: 0-02-284227-6

adaptation

© Macmillan/McGraw-HillPhotograph by Nigel J. Dennis/Photo Researchers Inc.

Grade 1 31

Vocabulary Routine

Define: A body part or behavior that helps an animal survive.

Example: A giraffe’s long neck is an adaptation.

Ask: Why is a giraffe’s long neck an adaptation?

livingGrade 1 1Grade 1 2 nonliving

© Macmillan/McGraw-HillPhotograph by Comstock/PictureQuest

© Macmillan/McGraw-HillPhotograph by C. Borland/PhotoLink/Getty Images

Vocabulary Routine

Defi ne: Something that grows, changes, and needs food, air, and water to survive.

Example: This girl is a living thing.

Ask: What are some other living things?

Vocabulary Routine

Defi ne: Something that does not grow and change, or need food, air, or water to survive.

Example: A rock is a nonliving thing.

Ask: What are some other nonliving things?

Grade 1 3

nutrient

leaves

© Macmillan/McGraw-HillPhotograph by Evan Sklar/Botanica/Jupiter Images

Grade 1 4© Macmillan/McGraw-HillPhotograph by Brand X Pictures/PunchStock

Vocabulary Routine

Defi ne: Something that living things need to grow.

Example: Plant roots can get nutrients from soil.

Ask: Where do you get nutrients from?

Vocabulary Routine

Defi ne: Plant parts that use sunlight and air to make food.

Example: Leaves come in different shapes and sizes.

Ask: What would happen if a plant lost all of its leaves?

Grade 1 5Grade 1 6

stemroot

stem

root

© Macmillan/McGraw-HillPhotograph by John Kaprielian/Photo Researchers, Inc.

© Macmillan/McGraw-HillPhotograph by John Kaprielian/Photo Researchers, Inc.

Vocabulary Routine

Defi ne: The part of a plant that holds up the plant.

Example: The stem holds up the fl ower.

Ask: What would happen if a plant did not have a stem?

Vocabulary Routine

Defi ne: Plant part that keeps the plant in the ground.

Example: Roots hold a plant in the ground.

Ask: What would happen if a plant did not have roots?

Grade 1 8 fl ower

trunk

© Macmillan/McGraw-HillPhotograph by Royalty-Free/CORBIS

Grade 1 7© Macmillan/McGraw-HillPhotograph by Royalty-Free/CORBIS

Vocabulary Routine

Defi ne: The thick stem of a tree.

Example: A trunk helps protect a tree from weather and animals.

Ask: How are the stem of a fl ower and the trunk of a tree the same?

Vocabulary Routine

Defi ne: A part of a plant that makes seeds.

Example: Flowers come in many shapes and colors.

Ask: Why is a fl ower important to a plant?

Grade 1 9Grade 1 10

seedfruit

© Macmillan/McGraw-HillPhotograph by Judd Pilossof/Foodpix/Jupiter images

© Macmillan/McGraw-HillPhotograph by Gilbert S. Grant/Photo Researchers Inc

seed

Vocabulary Routine

Defi ne: A part of a plant that can grow into a new plant.

Example: A seed inside a peach can grow a peach tree.

Ask: What happens when you plant and care for a seed?

Vocabulary Routine

Defi ne: The plant part that holds the seeds.

Example: The peach fruit has a seed inside.

Ask: What kinds of fruit do you like to eat?

Grade 1 11

life cycle

seedling

© Macmillan/McGraw-HillPhotograph by (t) S.J. Krasemann/Peter Arnold, Inc.;

(b) Siede Preis/Getty Images

Grade 1 12© Macmillan/McGraw-HillPhotograph by (b) Siede Preis/Getty Images; (l) Holt Studios International LTD/Alamy;

(r) S.J. Krasemann/Peter Arnold, Inc.

Vocabulary Routine

Defi ne: How a living thing grows, lives, and dies.

Example: The life cycle of a bean plant starts with a seed.

Ask: What happens in the life cycle of a bean plant?

Vocabulary Routine

Defi ne: A young plant.

Example: A young bean plant is a seedling.

Ask: How can you tell when a seed has grown into a seedling?

Grade 1 13Grade 1 14

desertrain forest

© Macmillan/McGraw-HillPhotograph by Mark Gibson/Index Stock

© Macmillan/McGraw-HillPhotograph by Tom Bean/CORBIS

Vocabulary Routine

Defi ne: A hot and dry place.

Example: Cactus plants can live in the desert.

Ask: What helps cactus plants live in the desert?

Vocabulary Routine

Defi ne: A hot, wet place.

Example: A rain forest has many green plants.

Ask: What helps some plants survive in the rain forest?

Grade 1 15

arcticmammal

© Macmillan/McGraw-HillPhotograph by Blickwinkel/Alamy

Grade 1 16© Macmillan/McGraw-HillPhotograph by 2006 Jim D. Barr/AlaskaStock.com

Vocabulary Routine

Defi ne: An icy and cold place near the North Pole.

Example: When arctic snow melts, small fl owers grow.

Ask: What would you wear if you lived in the arctic?

Vocabulary Routine

Defi ne: An animal with hair or fur.

Example: Most mammals give birth to live young.

Ask: What are some mammals you know?

bird

© Macmillan/McGraw-HillPhotograph by Flip De Nooyer/Foto Natura/Minden Pictures

Grade 1 17

reptile

© Macmillan/McGraw-HillPhotograph by IT Stock/Punchstock

Grade 1 18

Vocabulary Routine

Defi ne: An animal that has two legs, two wings, and feathers.

Example: A duck is a bird.

Ask: What is another kind of bird?

Vocabulary Routine

Defi ne: An animal that has dry skin covered with scales.

Example: A snake is a reptile.

Ask: What is another kind of reptile?

Grade 1 19

amphibian© Macmillan/McGraw-HillPhotograph by Michael & Patricia Fogden/Minden Pictures

fi sh

© Macmillan/McGraw-HillPhotograph by Imagestate/Alamy

Grade 1 20

Vocabulary Routine

Defi ne: An animal that lives on land and in water.

Example: A frog is an amphibian.

Ask: What is another kind of amphibian?

Vocabulary Routine

Defi ne: An animal that lives in water and has gills and fi ns.

Example: Fish use gills to breathe in water.

Ask: Where can fi sh live?

shelter

© Macmillan/McGraw-HillPhotograph by Daniel J Cox/Getty Images

Grade 1 22

insect

© Macmillan/McGraw-HillPhotograph by (b) Ted Clutter/Photo Researchers, Inc.;

(t) Natalie Ray for Macmillan/McGraw-Hill

Grade 1 21

Vocabulary Routine

Defi ne: An animal with three body parts and six legs.

Example: An ant is an insect.

Ask: What is another kind of insect?

Vocabulary Routine

Defi ne: A place where animals can live and be safe.

Example: These raccoons fi nd shelter in a log.

Ask: Where else could an animal fi nd shelter?

gills

© Macmillan/McGraw-HillPhotograph by Photodisc/Getty Images

Grade 1 23

lungs

© Macmillan/McGraw-HillPhotograph by Pete Oxford/Minden Pictures

Grade 1 24

Vocabulary Routine

Defi ne: The part of a fi sh that takes in oxygen from water.

Example: A fi sh uses its gills to breathe in water.

Ask: Why are gills important to a fi sh?

Vocabulary Routine

Defi ne: Body parts used to breathe air.

Example: Birds use lungs to breathe.

Ask: What other animals use lungs to breathe?

Grade 1 26 carnivore

herbivore

© Macmillan/McGraw-HillPhotograph by OnRequest Images, Inc./Alamy

Grade 1 25© Macmillan/McGraw-HillPhotograph by Alan & Sandy Carey/zefa/CORBIS

Vocabulary Routine

Defi ne: An animal that eats plants.

Example: A rabbit is a herbivore.

Ask: What is another animal that is a herbivore?

Vocabulary Routine

Defi ne: An animal that eats other animals.

Example: A tiger is a carnivore.

Ask: What is another animal that is a carnivore?

Grade 1 28

tadpolehatch

© Macmillan/McGraw-HillPhotograph by Paul Bricknell/Dorling Kindersley

Grade 1 27© Macmillan/McGraw-HillPhotograph by David Boag/Oxford Scientifi c/Jupiter Images;

(bkgd) Jim Brandenburg/Minden Pictures

Vocabulary Routine

Defi ne: A baby animal breaking out of an egg.

Example: Birds hatch from eggs.

Ask: What is another animal that can hatch from an egg?

Vocabulary Routine

Defi ne: A young frog.

Example: A tadpole grows into an adult frog.

Ask: How would you describe a tadpole?

Grade 1 30 grassland

habitat

© Macmillan/McGraw-HillPhotograph by Nicole Duplaix/Getty Images

Grade 1 29© Macmillan/McGraw-HillPhotograph by Jeremy Woodhouse/Masterfi le

Vocabulary Routine

Defi ne: A place where plants and animals live.

Example: A forest is a habitat for many plants and animals.

Ask: What is another kind of habitat?

Vocabulary Routine

Defi ne: A large open place with a lot of grass.

Example: Prairie dogs live on a grassland.

Ask: What helps prairie dogs live on a grassland?

adaptation

© Macmillan/McGraw-HillPhotograph by Nigel J. Dennis/Photo Researchers Inc.

Grade 1 31

forest

© Macmillan/McGraw-HillPhotograph by Jack Milchanowski/Visuals Unlimited

Grade 1 32

Vocabulary Routine

Defi ne: A body part or behavior that helps an animal survive.

Example: A giraffe’s long neck is an adaptation.

Ask: Why is a giraffe’s long neck an adaptation?

Vocabulary Routine

Defi ne: A place where there are many tall trees.

Example: Many plants and animals live in the forest.

Ask: What are some kinds of plants and animals that live in the forest?


lakeocean

© Macmillan/McGraw-HillPhotograph by (cr) Arthur Morris/CORBIS; (bl) John Warden/Getty Images;

(b) David R. Frazier Photolibrary, Inc./Alamy.

© Macmillan/McGraw-HillPhotograph by David Fleetham/Getty Images

Vocabulary Routine

Defi ne: Fresh water that has land all around it.

Example: A lake can be a home for many plants and animals.

Ask: Which animals can live in a lake?

Vocabulary Routine

Defi ne: Salty water that is very large and deep.

Example: Whales live in the ocean.

Ask: What other animals live in the ocean?

Grade 1 35Grade 1 36 extinct

food chain

Sun gives plant energy.

Insect eats plant.

Frog eats insect.

Owl eats frog.

© Macmillan/McGraw-Hill© Macmillan/McGraw-HillPhotograph by Macmillan/McGraw-Hill

Vocabulary Routine

Defi ne: The order in which living things get food in a habitat.

Example: All animals are part of a food chain.

Ask: What is happening in this food chain?

Vocabulary Routine

Defi ne: When all of one kind of plant or animal dies.

Example: The woolly mammoth is an extinct animal.

Ask: What other animals are extinct?

continent

© Macmillan/McGraw-HillPhotograph by NASA/Stock Image/agefotostock

Grade 1 37

river

© Macmillan/McGraw-HillPhotograph by Amy and Chuck Wiley/Wales/Index Stock

Grade 1 38

Vocabulary Routine

Defi ne: A large piece of land on Earth.

Example: There are seven continents on Earth.

Ask: What do you know about the continents on Earth?

Vocabulary Routine

Defi ne: Fresh water that moves.

Example: A river may fl ow into an ocean.

Ask: How is a river different from an ocean?


mountainvalley

© Macmillan/McGraw-HillPhotograph by Amy and Chuck Wiley/Wales/Index Stock

© Macmillan/McGraw-HillPhotograph by Gary Yeowell/Getty Images

Vocabulary Routine

Defi ne: Land that is very high.

Example: A mountain is the highest type of land.

Ask: How can you tell if you are on a mountain?

Vocabulary Routine

Defi ne: Low land between mountains.

Example: The valley is fl at.

Ask: Where can you fi nd a valley?

plainGrade 1 41Grade 1 42 mineral

© Macmillan/McGraw-HillPhotograph by Macduff Everton/CORBIS

© Macmillan/McGraw-HillPhotograph by /The McGraw-Hill Companies/ Ken Cavanagh Photographer

Vocabulary Routine

Defi ne: Flat land that spreads out a long way.

Example: A plain is wide and fl at.

Ask: How is a plain different from a valley?

Vocabulary Routine

Defi ne: A nonliving thing from the earth.

Example: All rocks are made of minerals.

Ask: Where can you fi nd minerals?

Grade 1 44 weathering

soil

© Macmillan/McGraw-HillPhotograph by Natalie Ray for Macmillan/McGraw-Hill

Grade 1 43© Macmillan/McGraw-HillPhotograph by Larry Stepanowicz/Visuals Unlimited

Vocabulary Routine

Defi ne: The top layer of Earth.

Example: Soil is a mixture of tiny bits of rock, air, water, dead plants, and dead animals.

Ask: What can you grow in soil?

Vocabulary Routine

Defi ne: When water changes the shape and size of rocks.

Example: Weathering can make rocks crack.

Ask: How else can weathering change rocks?

Grade 1 46 natural resource

erosion

© Macmillan/McGraw-HillPhotograph by Daryl Benson/Masterfi le

Grade 1 45© Macmillan/McGraw-HillPhotograph by Rainer Hackenberg/zefa/CORBIS

Vocabulary Routine

Defi ne: When rock and soil are moved by wind or water to a new place.

Example: Erosion slowly changes the shape of the land.

Ask: How do you think erosion has changed the shape of the land in this picture?

Vocabulary Routine

Defi ne: Something that comes from Earth that people use.

Example: Rocks are a natural resource.

Ask: What is another natural resource?


pollution© Macmillan/McGraw-HillPhotograph by Deco/Alamy

conserve


Vocabulary Routine

Defi ne: Harmful things in the air, land, or water.

Example: Water pollution can harm animals.

Ask: What are some other kinds of pollution?

Vocabulary Routine

Defi ne: To save, keep, or protect.

Example: You can conserve resources by not wasting them.

Ask: What are some ways you can conserve resources?

Grade 1 49

reuse

reduce

© Macmillan/McGraw-HillPhotograph by Big Cheese Photo/Punchstock

Grade 1 50© Macmillan/McGraw-HillPhotograph by Natalie Ray for Macmillan/McGraw-Hill

Vocabulary Routine

Defi ne: To use something again.

Example: You can reuse cans and bottles.

Ask: What other things can you reuse?

Vocabulary Routine

Defi ne: To use less of something.

Example: You can reduce how much water you use by turning the water off when brushing your teeth.

Ask: How can you reduce using other things?

Grade 1 51

recycle

weather

© Macmillan/McGraw-HillPhotograph by Robert Brenner/Photo Edit

Grade 1 52© Macmillan/McGraw-HillPhotograph by Mark E. Gibson/CORBIS

Vocabulary Routine

Defi ne: To make a new thing from an old thing.

Example: You can recycle paper, plastic, and glass.

Ask: Why should you recycle?

Vocabulary Routine

Defi ne: What the sky and air are like each day.

Example: The weather is rainy today.

Ask: What are some other kinds of weather?


temperaturethermometer

© Macmillan/McGraw-HillPhotograph by Brand X Pictures/Punchstock

© Macmillan/McGraw-HillPhotograph by The McGraw-Hill Companies/Jacques Cornell Photographer

Vocabulary Routine

Defi ne: How hot or cold something is.

Example: In winter, the temperature can be very cold.

Ask: What is the temperature today?

Vocabulary Routine

Defi ne: A tool that measures temperature.

Example: The thermometer shows a temperature of 65 degrees Fahrenheit.

Ask: Why would you use a thermometer?

wind vane

© Macmillan/McGraw-HillPhotograph by Dynamic Graphics Group/Creatas/Alamy;

(bkgd) Photolink/Getty Images

Grade 1 56

rain gauge

© Macmillan/McGraw-HillPhotograph by L.S. Stepanowicz/Bruce Coleman, Inc.

Grade 1 55

Vocabulary Routine

Defi ne: A tool that measures how much rain falls.

Example: A rain gauge is a weather tool.

Ask: Why would you use a rain gauge?

Vocabulary Routine

Defi ne: A tool that shows the direction of the wind.

Example: A wind vane is a weather tool.

Ask: Why would you use a wind vane?


water vaporcloud

Sun

water vapor

rain

cloud

© Macmillan/McGraw-Hill© Macmillan/McGraw-HillPhotograph by Corbis/Punchstock

Vocabulary Routine

Defi ne: Water that goes up into the air as a gas and is too small to see.

Example: You can not see water vapor.

Ask: What happens to water vapor?

Vocabulary Routine

Defi ne: Tiny drops of water and bits of ice that collect in the sky.

Example: Rain or snow can fall from a cloud.

Ask: What makes a cloud?

Grade 1 60 spring

season

© Macmillan/McGraw-HillPhotograph by Stock Connection/Alamy

Grade 1 59© Macmillan/McGraw-HillPhotograph by Richard Cummins/CORBIS

Vocabulary Routine

Defi ne: A time of year.

Example: Fall, winter, spring, and summer are the four seasons.

Ask: How is each season different?

Vocabulary Routine

Defi ne: The season after winter.

Example: Many baby animals are born in spring.

Ask: What else happens in spring?

summerGrade 1 61

fall

© Macmillan/McGraw-HillPhotograph by Ariel Skelley/Getty Images

Grade 1 62© Macmillan/McGraw-HillPhotograph by Photodisc/Punchstock

Vocabulary Routine

Defi ne: The season after spring.

Example: Lemonade can cool you off in the hot summer.

Ask: What do you like to do in summer?

Vocabulary Routine

Defi ne: The season after summer.

Example: Some leaves change colors in fall.

Ask: What do you like to do in fall?


winterstar

© Macmillan/McGraw-HillPhotograph by Brand X Pictures/Punchstock

© Macmillan/McGraw-HillPhotograph by Rob Matheson/CORBIS

Vocabulary Routine

Defi ne: The season after fall.

Example: It can snow in winter.

Ask: What do you like to do in winter?

Vocabulary Routine

Defi ne: An object in the sky that makes its own light.

Example: We can see many stars in the night sky.

Ask: What star can you see in the day sky?

night day

You are here.

Sun

Grade 1 66 rotate

Sun

© Macmillan/McGraw-HillPhotograph by G. Schuster/zefa/CORBIS

Grade 1 65© Macmillan/McGraw-Hill

Vocabulary Routine

Defi ne: The star closest to Earth.

Example: The Sun gives light and heat to Earth.

Ask: Why do you think the Sun is important to Earth?

Vocabulary Routine

Defi ne: To spin.

Example: Earth turns, or rotates, every 24 hours.

Ask: What other things rotate?


Moonphases

© Macmillan/McGraw-HillPhotograph by Eckhard Slawik/Photo Researchers, Inc

© Macmillan/McGraw-HillPhotograph by Eckhard Slawik/Photo Researchers, Inc.

Vocabulary Routine

Defi ne: A ball of rock that moves around Earth.

Example: The Moon does not make its own light.

Ask: When can you see the Moon?

Vocabulary Routine

Defi ne: The different Moon shapes we see each month.

Example: A crescent Moon is one of the Moon’s phases.

Ask: What do some other phases of the Moon look like?


planetproperty

Saturn

© Macmillan/McGraw-Hill© Macmillan/McGraw-HillPhotograph by Ken Cavanagh for Macmillan/McGraw-Hill

Vocabulary Routine

Defi ne: A very large object that moves around the Sun.

Example: Saturn is a planet.

Ask: What is the name of another planet?

Vocabulary Routine

Defi ne: How something looks, feels, smells, tastes, or sounds.

Example: Color is a property of the puppets.

Ask: What is another property of the puppets?

Grade 1 72 mass

matter

© Macmillan/McGraw-HillPhotograph by Dorling Kindersley

Grade 1 71© Macmillan/McGraw-HillPhotograph by Natalie Ray for Macmillan/McGraw-Hill

Vocabulary Routine

Defi ne: What all things are made of.

Example: A kite is made of matter.

Ask: What else is made of matter?

Vocabulary Routine

Defi ne: The amount of matter in an object.

Example: A metal bird has more mass than a sponge bird.

Ask: How do you know a metal bird has more mass than a sponge bird?

Vocabulary Routine

Defi ne: A tool used to measure mass.

Example: The side of a balance with more mass will go down.

Ask: What does a balance do?

Vocabulary Routine

Defi ne: A state of matter that has a shape of its own.

Example: A block is a solid.

Ask: What is another solid?


liquidgas

© Macmillan/McGraw-HillPhotograph by Sally Ullman/FoodPix/Jupiter Images

© Macmillan/McGraw-HillPhotograph by Jules Frazier/Getty Images

Vocabulary Routine

Defi ne: A state of matter that fl ows and takes the shape of its container.

Example: Milk is a liquid.

Ask: What else is a liquid?

Vocabulary Routine

Defi ne: A state of matter that does not have its own shape.

Example: Gas gives balloons their shape.

Ask: How can you fi ll a balloon with gas?


burnmixture

© Macmillan/McGraw-HillPhotograph by Ken Cavanagh for Macmillan/McGraw-Hill

© Macmillan/McGraw-HillPhotograph by Dennis Gray/Cole Group/Getty Images

Vocabulary Routine

Defi ne: A way of changing matter using heat.

Example: When you burn paper, it changes to ash.

Ask: What other things change when they burn?

Vocabulary Routine

Defi ne: Two or more different things put together.

Example: A fruit salad is a mixture of different fruits.

Ask: What is another kind of mixture you can make?

dissolve


Grade 1 79

freeze


Grade 1 80

Vocabulary Routine

Defi ne: To completely mix into a liquid.

Example: Drink mix will dissolve in water.

Ask: What else can dissolve into a liquid?

Vocabulary Routine

Defi ne: To change from a liquid to a solid.

Example: Water will freeze if it gets very cold.

Ask: What other liquids can freeze?

Vocabulary Routine

Defi ne: To change from a solid to a liquid.

Example: Ice cubes can melt and become water.

Ask: What other things can melt?

Vocabulary Routine

Defi ne: To change from a liquid to a gas.

Example: Heat from the Sun made the water in this pond evaporate.

Ask: What else can evaporate?

Grade 1 83

position

motion

© Macmillan/McGraw-HillPhotograph by Thinkstock/Punchstock

Grade 1 84© Macmillan/McGraw-Hill

Vocabulary Routine

Defi ne: The place where something is located.

Example: You can fi nd something if you know its position.

Ask: What is your position in the classroom right now?

Vocabulary Routine

Defi ne: A change in an object’s position.

Example: The airplane is in motion.

Ask: How do you know when something is in motion?

speed

© Macmillan/McGraw-HillPhotograph by Digital Vision/Getty Images

Grade 1 85

force

© Macmillan/McGraw-HillPhotograph by ThinkStock LLC/Index Stock Imagery

Grade 1 86

Vocabulary Routine

Defi ne: How fast or slow something moves.

Example: A rocket ship can move at a fast speed.

Ask: What other things can move at a fast speed?

Vocabulary Routine

Defi ne: A push or a pull that makes an object move.

Example: It takes force, like a push, to move a ball.

Ask: How much force do you need to use to move a ball?

Grade 1 88 pull© Macmillan/McGraw-HillPhotograph by Michael Scott for Macmillan/McGraw-Hill

push

© Macmillan/McGraw-HillPhotograph by Chris Clinton/Getty Images

Grade 1 87

Vocabulary Routine

Defi ne: A force that moves something away from you.

Example: The girl pushes the basketball when she throws it.

Ask: What kinds of things can you push?

Vocabulary Routine

Defi ne: A force that moves something closer to you.

Example: The boy pulls the bag of basketballs.

Ask: Why would you need to pull something?

Grade 1 90 friction

gravity

© Macmillan/McGraw-HillPhotograph by Comstock Images/Punchstock

Grade 1 89© Macmillan/McGraw-HillPhotograph by Rolf Schultes/dpa/CORBIS

Vocabulary Routine

Defi ne: A force that pulls things toward Earth.

Example: Gravity keeps us from staying up in the air.

Ask: What would happen if there was no gravity?

Vocabulary Routine

Defi ne: A force that slows things down.

Example: If you drag a rubber stopper on the ground, friction makes you stop.

Ask: What are some ways you can cause friction?

Grade 1 91

simple machine

pulley

© Macmillan/McGraw-HillPhotograph by Glow Images/Punchstock

Grade 1 92© Macmillan/McGraw-HillPhotograph by Michael Newman/Photo Edit

pulley

Vocabulary Routine

Defi ne: A tool that can make it easier to move things.

Example: A rake is a simple machine.

Ask: What is another kind of simple machine?

Vocabulary Routine

Defi ne: A rope that moves over a wheel.

Example: A pulley can help raise a fl ag to the top of a fl agpole.

Ask: How can a pulley help you do work?

Grade 1 93

lever

ramp

© Macmillan/McGraw-HillPhotograph by Photofusion Picture Library/Alamy

Grade 1 94© Macmillan/McGraw-HillPhotograph by Steve Prezant/CORBIS

Vocabulary Routine

Defi ne: A bar that balances on a point and moves like a seesaw.

Example: An oar is a lever.

Ask: What is another kind of lever?

Vocabulary Routine

Defi ne: A slanted surface that you can use to move things up or down.

Example: A ramp makes it easier to go up to a higher place.

Ask: When would you use a ramp?

Vocabulary Routine

Defi ne: Something that can pull, or attract, some objects with metal in them.

Example: A magnet can attract metal paper clips.

Ask: How could you use a magnet at home?

Vocabulary Routine

Defi ne: The places where a magnet’s pull is strongest.

Example: A magnet has a North pole and a South pole.

Ask: What happens to some metal objects when they are near a magnet’s poles?

Vocabulary Routine

Defi ne: To push away.

Example: Alike poles on magnets will repel each other.

Ask: Can you use your hands to show what happens when magnets repel each other?

Vocabulary Routine

Defi ne: A force that makes things work or change.

Example: Gasoline gives cars the energy to move.

Ask: What other things need energy to work or change?


heatvibrate

© Macmillan/McGraw-HillPhotograph by Lena Johansson/Getty Images

© Macmillan/McGraw-HillPhotograph by David Young-Wolff/Photo Edit

Vocabulary Routine

Defi ne: A form of energy that makes things warm.

Example: Heat can make popcorn pop.

Ask: What else can heat do?

Vocabulary Routine

Defi ne: To move back and forth quickly.

Example: Sound is made when something vibrates.

Ask: What vibrates when you speak?

pitchGrade 1 101

light

© Macmillan/McGraw-HillPhotograph by David Young-Wolff/Photo Edit

Grade 1 102© Macmillan/McGraw-HillPhotograph by Tom Carter/Photo Edit

Vocabulary Routine

Defi ne: The lowness or highness of a sound.

Example: The sound of a siren has a high pitch.

Ask: What other sounds have a high pitch?

Vocabulary Routine

Defi ne: A form of energy that lets you see.

Example: Light from a fl ashlight can help you see in the dark.

Ask: What would happen if there were no light?

Vocabulary Routine

Defi ne: A form of energy that gives some things the power to work.

Example: Many things in your home need electricity to work.

Ask: What do you have in your home that needs electricity to work?

adaptation - MHSchoolExample: A ﬁ sh uses its gills to breathe in water. Ask: Why are gills...

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Transcript of adaptation - MHSchoolExample: A ﬁ sh uses its gills to breathe in water. Ask: Why are gills...