Unit 8 Review

The human body is a complex system. Which pair of systems below is most directly required to make the human body move?

• muscular and skeletal systems

• excretory and respiratory systems

• circulatory and endocrine systems

• digestive and nervous systems

How is this ecosystem MOST likely to be affected by an increase in the number of prairie dogs?

• There will be more food for mice

• The amount of grass will increase.

• The number of hawks will decrease.

• There will be more food for snakes.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What kind of energy is necessary to initiate (begin)the process of photosynthesis?

• electrical

• radiant

• heat

• wind

Tags

NGSS.MS-LS1-6

The primary consumers in this ecosystem depend on which organisms for energy?

• Ants, White-footed mice, Field sparrows

• Longleaf woodoats, Water oaks

• Louisiana milk snakes, Striped skunks

• White-tailed deer, Beetles

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Mrs. Johnston heated 5 grams of sugar. The sugar first looked shiny, and then it melted and became dark brown. Finally, all that was left was a black, shiny residue. She then heated 5 grams of sand in the same way. The sand’s appearance did not change. What explains these results?

• Heating the sugar caused a chemical change.

• sand is an element, but sugar is a compound.

• Heat only caused physical changes in both the sand and sugar.

• Heating the sand caused a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Which organisms all consume the same primary consumer?

• Mouse, Rabbit, Caterpillar

• Frog, Snake

• Grasshopper, Caterpillar

• Hawk, Owl, Snake

Why is the bottom trophic level of an energy pyramid typically larger than the top trophic level?

• Producers contain the greatest amount of energy in comparison to the other trophic levels.

• There are more secondary consumers in an ecosystem than any other trophic level

• Primary consumers have the greatest amount of energy in comparison to the other trophic levels.

• There are more herbivores in an ecosystem than any other trophic level

Tags

NGSS.MS-LS2-3

• F

• G

• H

• J

Tags

NGSS.MS-PS2-2

• F

• G

• H

• J

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS2-4

• A

• B

• C

• D