ENERGY & THE SUN
What type of eater eats both plants and animals?
omnivore
What sugar do plants make during photosynthesis?
Glucose
What part of the plant absorbs water?
Roots
An animal that uses energy to stay warm is called an…
Endotherm
What type of energy do animals take in when they eat?
Chemical energy.
Where does all the energy in food originally come from?
Sun
What gas do plants release?
Oxygen
What tiny openings on leaves allow gases to move in and out?
Stomata
An animal that warms itself using the environment is called a…
Ectotherm
What kind of energy is produced when animals move?
Kinetic energy
Place these in order: Human, Plant, Sun, Chicken..
Sun → Plant → Chicken → Human.
What THREE things do plants need to carry out photosynthesis?
Sunlight, carbon dioxide, water
Water moves from the roots → stem → _______.
Leaves
Why does a snake lie in the sun?
It is an ectotherm that needs external heat
Name one visible and one invisible way animals use energy.
Visible: running/jumping. Invisible: breathing/digestion.
Why does a hummingbird need less food than an elephant?
It’s much smaller and uses less total energy.
What captures light inside the leaf?
Chlorophyll
What materials from soil help plants stay healthy? Name two.
Nitrogen, phosphorus, potassium, iron (any two).
What happens to an ectotherm in cold weather?What happens to an ectotherm in cold weather?
its metabolism slows down, so it moves slowly
Where does unused energy go?
Stored as fat or released as waste.
Explain how the energy in an egg can be traced back to the sun.
Plants get sun energy → chicken eats plants → egg contains that energy.
Why do desert plants open their stomata at night?
To save water because it’s cooler and less water evaporates.
Explain how plants gain mass as they grow.
They combine water and carbon dioxide to make glucose, which becomes new plant tissue.
Why does an endotherm eat more in the winter?
It uses energy to maintain its body temperature.
Which needs to eat more often — sloth or pocket mouse? Why?
Pocket mouse — it has a fast metabolism and uses energy quickly.