Energy Sources for Plants

Miranda's neighbors have an apple tree in their yard. What is the source of energy for the apple tree?

• rain

• soil

• sunlight

• wind

Students tested how plants grow in different places in the classroom. They planted a seed in a pot for each place. They drew pictures of each plant after one month. Which diagram is most likely of a plant that was in a dark closet?

• A

• B

• C

• D

Plants do not usually need to eat other organisms because plants

• do not need food energy to live.

• turn sunlight into food energy.

• get all their food energy from soil.

• keep food energy stored in their roots.

Which diagram best shows how energy flows through a simple food chain?

• Leaves → Caterpillar → Bird

• Tree → Bird → Caterpillar

• Leaves → Tree → Caterpillar

• Caterpillar → Leaves → Bird

Some parts of a simple food chain are shown out of order: Grasshopper, Sun, Grass. Which diagram correctly shows how energy flows through this food chain?

• Grass → Grasshopper → Sun

• Grasshopper → Grass → Sun

• Sun → Grass → Grasshopper

• Sun → Grasshopper → Grass

Jackie was studying energy flow in food webs. Which receives its energy from the rabbit?

• the Sun

• the grass

• the deer

• the wolf

A student is studying an ecosystem. She knows that mice, owls, insects, and plants are in the food chain. Which model shows the correct role that plants have in the ecosystem?

• owls -> mice -> insects -> plants

• plants -> insects -> mice -> owls

• insects -> plants -> mice -> owls

• mice -> insects -> owls -> plants

The main source of food for a coyote population in one area is mice. Which is most likely to happen to these coyotes if a new predator begins eating the mice?

• There will be fewer coyotes.

• The coyotes will produce more young.

• More coyotes will arrive from other locations.

• Each coyote will spend less time hunting food.

How would the number of frogs in a lake most likely be affected by a long period of bright sunshine, a higher-than-normal temperature, and much less rain than usual?

• There would be fewer frogs because they could not reproduce if ponds dried up.

• There would be fewer frogs because their predators would leave.

• There would be more frogs because they could catch more food in hot weather.

• There would be more frogs because they would grow faster in bright sunshine.

If two objects are going the same speed, but have different masses, the object with the larger mass will have greater kinetic energy. If one bike and one truck were both going 45 mph, which of the two would have the greater kinetic energy?

• The bike

• The truck

• They have the same kinetic energy

• They do not have kinetic energy