DO NOW 9/8What type of investigation requires a hypothesis?

What type of variable is changed by the scientist?

ESSENTIAL QUESTION:What is work and how is it related to force?

OBJECTIVES:-Review Force and Unbalanced Forces-Introduce work and examples of work.

Descriptive vs. Comparative

Jane Goodall began studying Chimpanzee’s in the 1960’s. Jane moved to Africa and began making close observations of Chimpanzees in the wild. Because of her investigations we now know that chimpanzees are meat eaters, use tools, and hunt Capuchin monkeys for food.

In the 1670’s Antony van Leeuwenhoek was the first person to look at living cells under a microscope. Leeuwenhoek viewed pond water under a microscope and discovered a world of small single celled creatures.

Descriptive vs. Comparative

Jane and Sarah are involved in the student health club. They are concerned about rumors that girls are concerned about their weight. They are wondering if this is a problem with girls in 6th and 7th grades. Both girls make careful observations in the cafeteria during 6th and 7th grade lunch. The girls put their findings together so they can present it to their teacher.

Descriptive vs. Comparative

Max wants to help plant the school garden. He is interested in planting species of plants and flowers that will attract birds and butterflies. Max decided to go to the local city garden. Max made careful note of the animals that visited the gardens. When he was finished observing he recorded the names of the plant species that were planted there.

What type of Investigation?

Jason is on the track team, and he wants to run faster. While watching TV, he sees two different commercials for energy drinks that promise to give you more energy. He times himself running 1 mile on Monday without any energy drink. Then he times himself running 1 mile after drinking 16oz of Red-Bull one week later. Finally, he times himself running 1 mile after drinking 16oz of Monster energy drink a week later. After analyzing the data, he infers that energy drinks do not make him run faster.

What type of Investigation?

Mark works for the National Forest Service. He is concerned about the effects of forest fires on the species of plants and animals in the mountains where he works. Mark decided to visit the north side of Sleeping Ute Mountain where fires were very rare. He recorded observations of the plants and animals. Mark then traveled to the south side of the mountain that had recently experienced a wild fire (caused by lightning). Mark recorded his observations of the plants and animals there.

Work and Force

Pair Share: What is work?

Brainpop: Work

Pair Share:Now, how would you describe work?

NEW UNIT

• On page 13, create a title page for:

UNIT 2: WORK AND FORCE

Work = Force X Distance

Partner Read “Forced Wave”

Expectations for Partner Read:Voice Level 1Partner closest to screen starts firstAlternate paragraphs between partners

Partner Read 146-147

Expectations for Partner Read:Voice Level 1Partner closest to screen starts firstEach partner is responsible for Reading

After Reading:Complete the Frayer Modelsfor Work and Force and tape to page 14 in yournotebook.

EXIT SLIP

• Quick Write ( page ____ of your INB)

• Create a scenario where WORK is being done, and create a scenario where WORK is not being done, but a force is being applied

Let’s Review ESSENTIAL QUESTION:What is work and how is it related to force?

OBJECTIVES:-Define work and examples of work.

DO NOWDate:9/9/14

Describe the scientific definition of WORK in your own words.

ESSENTIAL QUESTION:What is work and how is it related to force?

OBJECTIVES:-Model work being done and not being done.-Practice calculating WORK.

NASA Work/Force Video

• http://www.youtube.com/watch?v=iCqm5uxc2dE

FORCE

Add this definition to your Frayer model on page 14

FORCE:a push or pull upon an object measured in Newtons.

Complete a drawing, example, and description in your own words for FORCE and for WORK.

Work and Human Body Lab

A: Materials ManagerB: RecorderC: Time KeeperD: Lab Director

VOICE LEVEL: 2

Follow instructions on your lab sheet

Doing WORK?Lift the book at your table straight out in front of you.

-Could you feel your muscles working?-Did you use force to get the books straight out in front

of you? Did you use force to keep them there?-Did you do work to get them out in front of you?Did you do work to keep them there? Explain?

REMEMBER: Work is done on an object when an applied force moves it through a distance in the direction of the force.

Work and Energy Word Problems

• Work with your table partners and complete the word problems.

• YOU MUST include units of measurement.Force-NEWTONS (N)Distance-METERS (m)Work- JOULES (J)

• Show your work

Let’s ReviewESSENTIAL QUESTION:What is work and how is it related to force?

OBJECTIVES:-Model work being done and not being done.-Calculate WORK.

DO NOWDate:9/10 & 11

Q: How do simple machines affect force when doing work?

Look at the picture, if you wanted to get the object into the back of the truck, what tool could you use to reduce the amount of force needed?

ESSENTIAL QUESTION:How do simple machines affect force when doing work?

OBJECTIVES:-Students will investigate the effects of inclined planes on force and work.

Inclined Planes

Brain Pop- Inclined Plane

Reading: Inclined Planes

• Class Set…do not write on it• Follow along. You may be asked to read!

Inclined Plane Notes

Draw an Inclined Plane in your notebook on page 18 and label it.

Also, explain what it does:Reduces the amount of force needed to lift an object by increasing the distance needed to move it.

Triple Beam Balance Video

• How to use a triple beam balance

Situations of Work and Force Lab

A:Materials Manager (Trays)B: Materials Manager (Balance and Ramps)C: Lab DirectorD: Data Recorder

VOICE LEVEL: 2Do NOT touch or play with materials when they

are not in use

Lab Set Up

• Materials Manager A: Get a tray from the counter with rocks, spring scale, baggies, and calculator

• Materials Manager B: Pick Up a triple bea balance and a ramp

• Groups: Measure 100 grams of rocks in each of your 3 baggies.

• **Do NOT touch materials you are not using

Inclined Plane Lab

Part oneDo not use the ramp.Simply follow the instructions and record your

data

Part twoUse the ramp.Follow instructions and record the data

Exit Ticket: Quick Write

TOP TEN: Explain to the movers why using a ramp to help them load the truck will help get the job done.

You can use your TOP TEN to complete 1, 3, or 9.

INCLUDE THE FOLLOWING WORDS:Inclined plane, work, force, direction

Let’s ReviewESSENTIAL QUESTION:How do simple machines affect force when doing work?

OBJECTIVES:-Students will investigate the effects of inclined planes on force and work.

DO NOWDate:9/12

Q: What is the relationship between work and force?

Describe a situation where work is being done. How do you know work is being done?

ESSENTIAL QUESTION:What is the relationship between work and force?

OBJECTIVES:-Grade Homework-Quiz on Lab Safety, Scientific Investigations, and Work and Force-Correct Quiz

Quiz

• Voice Level 0

• Turn your quiz over when you are finished