Lesson: Energy and Space 1Wednesday, Nov. 9Objective: Describe how plants make their food (photosynthesis)

Warm Up:

What do all living things need?

Write down as many things as you can in one minute. Ready Go!

Plants Make Their Own Food: A Recipe for Photosynthesis

Photosynthesis is: How plants make their food

Plants do not need to go to the cafeteria for lunch!They do need a few special ingredients, though…

Write this down:

What is needed for photosynthesis to occur?

Carbon Dioxide (CO2)CO2 is breathed out by animals (and people).

CO2

What is needed for photosynthesis to occur?

LightPlants use light energy to make sugar

What is needed for photosynthesis to occur?

WaterThe plant’s leaves and roots soak up water to use for photosynthesis.

What is MADE by plants as a result of photosynthesis?

Oxygen (O2)

We use it to breathe!

What is MADE by plants as a result of photosynthesis?

Sugar (Food)

What is MADE by plants as a result of photosynthesis?

WaterPlants release water through their leaves. This is called transpiration!

A Formula for Photosynthesis

Sun + Carbon Dioxide + Water = Food + Oxygen + Water

What part of the plant absorbs the sun’s energy? Chlorophyll!

Now it’s YOUR TURN: Photosynthesis

Plants Need Plants Make

3 factors 3 factors plants need plants make

PHOTOSYNTHESIS

Plants Need Plants Make

Sunlight

Carbon Dioxide(CO2)

Water

Sugar (Food)

Oxygen (O2)

Water

WATER

SUGAR

Why are plants called producers?

WHY IS PHOTOSYNTHESIS SO IMPORTANT?

PHOTOSYNTHESIS is one of the most important biological process on earth!· Provides the oxygen (O2) we breathe· Consumes extra Carbon Dioxide CO2

· Makes Plant Food· Gives US food!

But HOW can plants use sunlight to make food??????

1. Plants get energy from the sun.

2. Inside the plant, the Chloroplast is where photosynthesis happens.

3. Chloroplasts are filled with chlorophyll.

4. Chlorophyll is the stuff that makes plants green.

5. Chlorophyll absorbs the sun’s energy and gives the plants energy to do photosynthesis.

Question: What is the energy source that a plant needs to do photosynthesis? Answer: A plant’s energy comes from ________________ absorbed by _________________

How Are Plants and Animals Different?

·Animals cannot make their own food.·Animals do NOT have chlorophyll (even green animals don’t have it!)

Plants can make their own food.Plants have chlorophyll

Producers!