
Year 4 Photosynthesis Science Sheet
Understanding How Plants Make Food Science for Year 4 Students

What Do You Think?
How do you think plants get their food? Do plants eat like animals do? What do plants need to survive?

What is Photosynthesis?
Photo = Light Synthesis = Making or Building Photosynthesis = Making food using light It's like a plant's kitchen in their leaves!

The Photosynthesis Recipe

What Plants Need vs What Plants Make
{"left":"Sunlight from the sun\nCarbon dioxide from air\nWater from soil through roots","right":"Glucose (sugar) for food\nOxygen for us to breathe\nEnergy to grow and live"}

Where Does Photosynthesis Happen?
Inside the leaves of plants In tiny parts called chloroplasts Chloroplasts contain chlorophyll Chlorophyll makes leaves green! It catches sunlight like a solar panel
Photosynthesis Actions Game
Stand up and act out photosynthesis! Stretch arms up high = collecting sunlight Breathe in deeply = taking in carbon dioxide Pretend to drink = absorbing water Clap hands = making glucose Blow out air = releasing oxygen

Why is Photosynthesis Important?
Plants make their own food to grow Plants give us oxygen to breathe Animals eat plants for energy Without photosynthesis, there would be no life on Earth! Plants are like Earth's air cleaners
Test Your Knowledge!
What does a plant need for photosynthesis? Where in the plant does photosynthesis happen? What does photosynthesis produce? Why do leaves look green?

Remember: Plants Are Amazing!
Plants make their own food using sunlight They clean our air by making oxygen Photosynthesis happens in green leaves Plants and animals depend on each other Take care of plants - they take care of us!