6th Gr. Unit 3 (4-5)

 Explain why the grasshopper population will decrease or increase.

• If spiders decrease there are fewer organisms to consume the grasshoppers, then the grasshopper population will increase.

• If spiders decrease there are fewer organisms to consume the grasshoppers, then the grasshopper population will decrease.

• If spiders decrease there are more organisms to consume the grasshoppers, then the grasshopper population will increase

• If spiders decrease there are more organisms to consume the grasshoppers, then the grasshopper population will decrease.

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(MS-LS2-1)

 A very hot summer in the forest caused the spider population to decrease greatly. What is likely to happen to the population of grasshoppers?

• The grasshopper population will decrease.

• The grasshopper population will increase.

• The grasshopper population will stay the same.

• The owl will start to eat the grasshoppers and the grasshopper population will decrease.

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(MS-LS2-1)

Using the food web diagram of the Great Lakes, which organism(s) would have an indirect effect on the trout if something happened to it? Choose 2 that apply.

• Lake whitefish

• Chubb

• Insect larvae

• leeches

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(MS-LS2-3)(MS-LS2-4)

Our energy comes from the sun. We get our energy from other animals and plants we eat. Each animal we eat gets energy from plants. Plants use the energy from the sun to grow and develop. All organisms need the energy to grow and develop. What is the claim in the explanation? Select 2 that apply.

• Animals eat plants and other animals.

• Plants grow and develop.

• We get our energy from the sun.

• Each animal we eat gets energy from plants.

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(MS-LS1-6)

What makes a scientific explanation convincing?

• It makes sense.

• There is a clear claim and the reasoning is based on evidence.

• It is true.

• There is not any evidence provided.

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(MS-LS1-6)

Would the smaller toothed whales be affected if phytoplankton were removed from the food web? Why or why not?

• If the phytoplankton were removed from the food web, the smaller toothed whales would eventually have nothing to eat since there are organisms like the other herbivorous zooplankton that eat it that are then eaten by fish which are then eaten by leopard seals which are then eaten by the smaller toothed whales. Everything would die out.

• If the phytoplankton were removed from the food web, the smaller toothed whales would not be affected since they have other things like other seals, penguins, and fish to eat.

• If the phytoplankton were removed from the food web, the smaller toothed whales would have difficulty catching food.

• If the phytoplankton were removed from the food web, the smaller toothed whales would not be affected.

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(MS-LS1-6)

 Look at smaller toothed whales. Which organisms are not directly connected to it? Choose 2 that apply.

• Leopard seal

• Fish

• Other Seals

• Krill

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(MS-LS1-6)

Here is a food chain: plankton → crayfish → trout  Is the interaction between the plankton and the crayfish direct or indirect?

• direct

• indirect

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(MS-LS2-3)

(MS-LS1-6)

Here is a food chain: plankton → crayfish → trout  Is the interaction between the trout and the plankton direct or indirect?

• direct

• indirect

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(MS-LS2-3)

Here is a food chain: plankton → crayfish → trout  What would happen to the trout if there was a decrease in plankton?

• The trout could increase since the crayfish would have more to eat and their population would probably increase.

• The trout could also decrease since the crayfish would have less to eat and their population would probably decrease.

• The trout could also decrease since the crayfish would have more to eat and their population would probably increase.

• The trout could increase since the crayfish would have less to eat and their population would probably decrease.

Tags

(MS-LS2-3)