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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. A series of organisims that depend on another for food
what organisms help each other
Step 1 of the carbon dioxide and oxygen cycle
food web
food chain

2. Several food chains that are connected
parasite
4 types of producers
food web
what organisms help each other

3. Oxygen
what gas do people breathe out
energy pyramid
the ONE thing all food that we eat comes from
the gas people breathe in...

4. All the members of a certain type of a living thing in an area
population
list 6 ecosystems
producer
energy pyramid

5. Producers give off oxygen as the make their own food
Step 1 of the carbon dioxide and oxygen cycle
producer
purpose of decomposers
the ONE thing all food that we eat comes from

6. All the living and non living things in an environment
ecosystem
Step 2 of the carbon dioxide and oxygen cycle
producer
the gas people breathe in...

7. The exchange of gasses between producers and consumers
consumer
population
energy pyramid
carbon dioxide and oxygen cycle

8. They all die
if the part of the food chain is missing...then what happens?
parasite
purpose of decomposers
Step 3 of the carbon dioxide and oxygen cycle

9. Tundra - dessert - rain forest - ocean - pond - lake
if the part of the food chain is missing...then what happens?
list 6 ecosystems
population
population

10. Consumers give off carbon dioxide
4 types of producers
energy pyramid
decomposer
Step 3 of the carbon dioxide and oxygen cycle

11. Consumers eat producers and other consumers. Producers make their own food
Step 3 of the carbon dioxide and oxygen cycle
difference between producers and consumers
if the part of the food chain is missing...then what happens?
food web

12. Tiger - bear - fox - wolf
energy pyramid
4 types of consumers
purpose of decomposers
what organisms help each other

13. Plants
food web
decomposer
5 things all living things need to survive
the ONE thing all food that we eat comes from

14. Several food chains that are connected
food web
Step 1 of the carbon dioxide and oxygen cycle
host
list 6 ecosystems

15. An organism that breaks down plant and animal material
decomposer
carbon dioxide and oxygen cycle
Step 2 of the carbon dioxide and oxygen cycle
if the part of the food chain is missing...then what happens?

16. Consumers take in the oxygen that the producers make
food chain
Step 2 of the carbon dioxide and oxygen cycle
host
energy pyramid

17. We need them because they break down dead plants and animals
purpose of decomposers
food web
parasite
3 groups that make up the energy pyramid

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

19. The exchange of gasses between producers and consumers
Step 4 of the carbon dioxide and oxygen cycle
the gas people breathe in...
carbon dioxide and oxygen cycle
difference between producers and consumers

20. Producers - plant eaters - meat eaters
consumer
if the part of the food chain is missing...then what happens?
4 types of consumers
3 groups that make up the energy pyramid

21. Air - water - sun - shelter - food
ecosystem
parasite
5 things all living things need to survive
parasite

22. A series of organisims that depend on another for food
Step 2 of the carbon dioxide and oxygen cycle
4 types of producers
purpose of decomposers
food chain

23. The organism a parasite lives on or in
list 6 ecosystems
host
energy pyramid
energy pyramid

24. Consumers eat producers and other consumers. Producers make their own food
where the world's oxygen supply comes from
difference between producers and consumers
decomposer
Step 4 of the carbon dioxide and oxygen cycle

25. Forest....plants and algae

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26. Plant - grass - flower - trees
food web
4 types of producers
the ONE thing all food that we eat comes from
Step 1 of the carbon dioxide and oxygen cycle

27. All the members of a certain type of a living thing in an area
food web
what organisms help each other
population
decomposer

28. A diagram that shows how energy in an ecosystem is used
list 6 ecosystems
purpose of decomposers
habitat
energy pyramid

29. All the living things in an ecosystem
community
where is one organism harmed and one helped?
the ONE thing all food that we eat comes from
if the part of the food chain is missing...then what happens?

30. An organism that lives in or on another organism
parasite
Step 1 of the carbon dioxide and oxygen cycle
host
food web

31. Producers - plant eaters - meat eaters
4 types of consumers
5 things all living things need to survive
ecosystem
3 groups that make up the energy pyramid

32. Air - water - sun - shelter - food
4 types of producers
Step 3 of the carbon dioxide and oxygen cycle
where the world's oxygen supply comes from
5 things all living things need to survive

33. They all die
if the part of the food chain is missing...then what happens?
community
host
decomposer

34. Consumers take in the oxygen that the producers make
4 types of producers
parasite
Step 2 of the carbon dioxide and oxygen cycle
5 things all living things need to survive

35. Producers take in carbon dioxide from the consumer
community
population
purpose of decomposers
Step 4 of the carbon dioxide and oxygen cycle

36. The place where a plant or animal naturally lives or grows
ecosystem
habitat
carbon dioxide and oxygen cycle
the gas people breathe in...

37. An organism that makes it's own food
5 things all living things need to survive
parasite
food web
producer

38. An organism that lives in or on another organism
where the world's oxygen supply comes from
5 things all living things need to survive
parasite
4 types of producers

39. We need them because they break down dead plants and animals
what organisms help each other
purpose of decomposers
Step 1 of the carbon dioxide and oxygen cycle
energy pyramid

40. All the living and non living things in an environment
host
decomposer
ecosystem
community

41. Plant - grass - flower - trees
5 things all living things need to survive
difference between producers and consumers
producer
4 types of producers

42. Producers give off oxygen as the make their own food
food web
difference between producers and consumers
Step 1 of the carbon dioxide and oxygen cycle
habitat

43. Plants
energy pyramid
if the part of the food chain is missing...then what happens?
carbon dioxide and oxygen cycle
the ONE thing all food that we eat comes from

44. A diagram that shows how energy in an ecosystem is used
carbon dioxide and oxygen cycle
what organisms help each other
the gas people breathe in...
energy pyramid

45. A tapeworm and a human
what organisms help each other
where is one organism harmed and one helped?
the ONE thing all food that we eat comes from
Step 2 of the carbon dioxide and oxygen cycle

46. Tiger - bear - fox - wolf
the gas people breathe in...
Step 1 of the carbon dioxide and oxygen cycle
4 types of consumers
if the part of the food chain is missing...then what happens?

47. Oxygen
list 6 ecosystems
parasite
where is one organism harmed and one helped?
the gas people breathe in...

48. An organism that eats the producer and other consumers
consumer
what gas do people breathe out
difference between producers and consumers
community

49. The place where a plant or animal naturally lives or grows
5 things all living things need to survive
3 groups that make up the energy pyramid
habitat
Step 2 of the carbon dioxide and oxygen cycle

50. The organism a parasite lives on or in
Step 2 of the carbon dioxide and oxygen cycle
Step 3 of the carbon dioxide and oxygen cycle
host
consumer