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3rd Grade Science Common Core

Subjects : science, 3rd-grade, common-core

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. All the living things in an ecosystem
what gas do people breathe out
population
community
purpose of decomposers

2. Several food chains that are connected
food web
where is one organism harmed and one helped?
the ONE thing all food that we eat comes from
what gas do people breathe out

3. A diagram that shows how energy in an ecosystem is used
3 groups that make up the energy pyramid
community
what organisms help each other
energy pyramid

4. An organism that breaks down plant and animal material
4 types of producers
food chain
host
decomposer

5. An organism that lives in or on another organism
parasite
food chain
population
population

6. Producers give off oxygen as the make their own food
3 groups that make up the energy pyramid
Step 4 of the carbon dioxide and oxygen cycle
Step 1 of the carbon dioxide and oxygen cycle
where is one organism harmed and one helped?

7. Producers take in carbon dioxide from the consumer
if the part of the food chain is missing...then what happens?
Step 4 of the carbon dioxide and oxygen cycle
what organisms help each other
ecosystem

8. All the members of a certain type of a living thing in an area
habitat
population
parasite
Step 4 of the carbon dioxide and oxygen cycle

9. A tapeworm and a human
where the world's oxygen supply comes from
decomposer
purpose of decomposers
where is one organism harmed and one helped?

10. Producers - plant eaters - meat eaters
the gas people breathe in...
4 types of consumers
3 groups that make up the energy pyramid
community

11. Oxygen
Step 3 of the carbon dioxide and oxygen cycle
the gas people breathe in...
what gas do people breathe out
energy pyramid

12. All the members of a certain type of a living thing in an area
what organisms help each other
host
4 types of producers
population

13. Air - water - sun - shelter - food
5 things all living things need to survive
host
where the world's oxygen supply comes from
list 6 ecosystems

14. All the living and non living things in an environment
what organisms help each other
consumer
4 types of producers
ecosystem

15. We need them because they break down dead plants and animals
host
purpose of decomposers
list 6 ecosystems
habitat

16. The organism a parasite lives on or in
ecosystem
food chain
list 6 ecosystems
host

17. Producers give off oxygen as the make their own food
Step 1 of the carbon dioxide and oxygen cycle
where is one organism harmed and one helped?
habitat
Step 2 of the carbon dioxide and oxygen cycle

18. We need them because they break down dead plants and animals
purpose of decomposers
list 6 ecosystems
Step 2 of the carbon dioxide and oxygen cycle
population

19. Consumers take in the oxygen that the producers make
list 6 ecosystems
Step 2 of the carbon dioxide and oxygen cycle
the ONE thing all food that we eat comes from
food chain

20. Consumers give off carbon dioxide
list 6 ecosystems
Step 3 of the carbon dioxide and oxygen cycle
population
difference between producers and consumers

21. The organism a parasite lives on or in
Step 3 of the carbon dioxide and oxygen cycle
host
where is one organism harmed and one helped?
5 things all living things need to survive

22. Consumers eat producers and other consumers. Producers make their own food
if the part of the food chain is missing...then what happens?
producer
difference between producers and consumers
5 things all living things need to survive

23. Air - water - sun - shelter - food
carbon dioxide and oxygen cycle
5 things all living things need to survive
4 types of producers
parasite

24. The place where a plant or animal naturally lives or grows
what gas do people breathe out
habitat
5 things all living things need to survive
purpose of decomposers

25. Plants
parasite
if the part of the food chain is missing...then what happens?
3 groups that make up the energy pyramid
the ONE thing all food that we eat comes from

26. Oxygen
5 things all living things need to survive
the gas people breathe in...
5 things all living things need to survive
decomposer

27. A series of organisims that depend on another for food
energy pyramid
what organisms help each other
food chain
5 things all living things need to survive

28. A tapeworm and a human
where is one organism harmed and one helped?
purpose of decomposers
parasite
where the world's oxygen supply comes from

29. An organism that eats the producer and other consumers
the ONE thing all food that we eat comes from
consumer
4 types of producers
3 groups that make up the energy pyramid

30. An organism that breaks down plant and animal material
community
4 types of producers
what gas do people breathe out
decomposer

31. Plants
the ONE thing all food that we eat comes from
4 types of producers
Step 1 of the carbon dioxide and oxygen cycle
carbon dioxide and oxygen cycle

32. The exchange of gasses between producers and consumers
the gas people breathe in...
carbon dioxide and oxygen cycle
where the world's oxygen supply comes from
Step 2 of the carbon dioxide and oxygen cycle

33. Tiger - bear - fox - wolf
list 6 ecosystems
where the world's oxygen supply comes from
4 types of consumers
habitat

34. An organism that makes it's own food
what organisms help each other
where is one organism harmed and one helped?
producer
if the part of the food chain is missing...then what happens?

35. Forest....plants and algae

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36. Consumers take in the oxygen that the producers make
energy pyramid
food web
Step 2 of the carbon dioxide and oxygen cycle
parasite

37. A series of organisims that depend on another for food
food chain
where is one organism harmed and one helped?
5 things all living things need to survive
what organisms help each other

38. Tiger - bear - fox - wolf
3 groups that make up the energy pyramid
Step 2 of the carbon dioxide and oxygen cycle
purpose of decomposers
4 types of consumers

39. A squirrel and a nut
3 groups that make up the energy pyramid
community
producer
what organisms help each other

40. An organism that makes it's own food
if the part of the food chain is missing...then what happens?
producer
habitat
list 6 ecosystems

41. An organism that eats the producer and other consumers
decomposer
4 types of consumers
what organisms help each other
consumer

42. Consumers eat producers and other consumers. Producers make their own food
difference between producers and consumers
energy pyramid
where is one organism harmed and one helped?
where the world's oxygen supply comes from

43. Several food chains that are connected
energy pyramid
parasite
food web
Step 4 of the carbon dioxide and oxygen cycle

44. Carbon dioxide
purpose of decomposers
producer
purpose of decomposers
what gas do people breathe out

45. Forest....plants and algae

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46. Plant - grass - flower - trees
ecosystem
host
list 6 ecosystems
4 types of producers

47. All the living things in an ecosystem
where the world's oxygen supply comes from
what gas do people breathe out
host
community

48. Consumers give off carbon dioxide
the ONE thing all food that we eat comes from
energy pyramid
decomposer
Step 3 of the carbon dioxide and oxygen cycle

49. Producers - plant eaters - meat eaters
the gas people breathe in...
decomposer
where is one organism harmed and one helped?
3 groups that make up the energy pyramid

50. Producers take in carbon dioxide from the consumer
decomposer
Step 4 of the carbon dioxide and oxygen cycle
habitat
what gas do people breathe out