What Biology Is: Life at Small Scale · Lesson 1 · 3 minutes
Use energy
Identify items that take in energy to live
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Living things need fuel
Every living thing needs energy to stay alive. A bird eats seeds. A plant takes in sunlight.
How does a rabbit get energy to live?
- It eats grass and plants.
- It drinks gasoline.
- It rests on warm rocks.
Answer: It eats grass and plants.
Animals eat food to get energy to live.
Machines also use energy
A car burns fuel to move. But a car is not alive. Living things use energy to repair parts and stay alive.
A truck drinks fuel and moves on a road. Is the truck alive?
- Yes, because it uses fuel to move.
- No, it is a machine built by humans.
Answer: No, it is a machine built by humans.
A machine uses fuel to move, but it is not alive.
Complete the sentence about plants.
A plant takes in ___ to get the ___ it needs to stay alive.
Answer: A plant takes in sunlight to get the energy it needs to stay alive.
Plants capture energy from sunlight.
Show how an owl stays alive.
Answer: An owl eats mice energy to live
Living things take in food or light to stay alive.
Put the flow of energy in order.
Answer: Sun gives off light energy. → Green plant absorbs sunlight. → Caterpillar eats the plant leaves.
Energy passes from the sun into plants, then into animals.
Trace how a deer gets energy to live.
This one uses your voice or your writing. It is in the Breni app.
What to remember
- All living things need energy to stay alive.
- Plants get energy from sunlight, and animals get energy from food.
- Machines like cars also use fuel, but they are not alive.
Next in this course: Grow and change. It carries on in the Breni app.