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Science
6th -
8thgrade
U4: L1 The Flow of Energy Drives the Cycling of Matter
20 questions
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- 1. Multiple Choice
Why is the ability to move important to animals?
It helps them find food.
It helps them stay warm.
It helps them obtain oxygen.
It helps them differentiate cells.
- 2. Multiple Choice
What form of energy is stored in food?
heat
light energy
energy of motion
energy in molecules
- 3. Multiple Choice
How do organisms get the energy they need?
Plants get energy from fertilizers. Animals get energy from water.
Plants get energy from the soil. Animals get energy directly from sunlight.
Plants do not need energy because they do not move. Animals get energy from food.
Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.
- 4. Multiple Choice
Dylan drew a diagram showing that certain organisms eat other organisms. The diagram included a caption stating that the amount of available energy decreases with each organism that is eaten. How is this explained by the law of conservation of energy?
Living things change energy into matter.
Some of the energy is used for life processes.
Some energy disappears when living things are eaten.
Only small amounts of energy can be destroyed at a time.
- 5. Multiple Choice
Carbon exists in many forms on Earth. The diagram shows part of the carbon cycle.
What does this diagram show?
It shows how matter can pass through an ecosystem.
It shows each step in the correct order that carbon must pass through.
It shows how more carbon is constantly being formed and passed along.
It shows how carbon is running out because it is all being used up by animals.
- 6. Multiple Choice
Worms break down dead plants in the soil to release nutrients. Which property of nutrients shows that they are matter?
Nutrients are warm.
Nutrients have mass.
Nutrients can do work.
Nutrients contain energy.
- 7. Multiple Choice
Some consumers, such as many flying insects, need large amounts of energy to grow and move from one place to another. How do consumers get energy to function?
Consumers obtain all of their energy by eating other organisms.
Consumers obtain some energy from other organisms and some from sunlight.
Consumers obtain most of their energy by absorbing it from their environments.
Consumers convert light energy from the sun into chemical energy stored in food.
- 8. Multiple Choice
Which of these best explains why predators need plants, such as grass, in their ecosystem?
Plants are a large part of their diets
Plants provide safety for predators
Plants break down the organisms that the predators eat
Plants provide food for their animals that the predators eat
- 9. Multiple Choice
What is the first source of energy for almost all food webs?
Plants
Sunlight
Mineral in the soil
Decomposers
- 10. Multiple Choice
What organisms are at the bottom of an energy pyramid?
Producer
Consumer
Decomposer
Scavenger
- 11. Multiple ChoiceHow much energy is passed on to each trophic level in an energy pyramid?10%90%50%80%
- 12. Multiple Choice
The job of decomposers in an ecosystem is to
break down once living things from all levels of the ecosystem to recycle nutrients back to producers
break down only top level consumers to recycle nutrients
break down only producers to recycle nutrients
give energy to all levels of the ecosystem
- 13. Multiple Choice
All living parts of an ecosystem (plants, animals, and decomposers) are depend on one another for
food
energy
cycling matter
food, energy, and the cycling of matter
- 14. Multiple Choice
All energy in an ecosystem comes from the sun. This energy is passed through the ecosystem as organisms eat other organsims.
Ominvores
Herbivores
Detritivores
Flow of energy
- 15. Multiple ChoiceWhat organisms are at the bottom of an energy pyramid?ProducerConsumerDecomposerScavenger
- 16. Multiple ChoiceWhere do crickets get their energy?CattailsMarsh GrassGrasshoppersShrews
- 17. Multiple Choice
Energy CANNOT be...
Given to your friend
Lost to the environment as heat
Created or destroyed
transferred to the surroundings
- 18. Multiple Choice
Organisms that break down wastes and dead organisms and return the raw materials to the environment
Producer
Consumer
Decomposer
- 19. Multiple ChoiceWhere is energy the highest in the food chain: grass, rabbit, hawk, bacteriagrassrabbithawkbacteria
- 20. Multiple ChoicePhotosynthesis uses sunlight to convert water and carbon dioxide intooxygenglucoseATP & oxygenoxygen & glucose
- Answer choicesTagsAnswer choicesTags