Which of the following is a biotic factor in a forest ecosystem?

• The rock formations that make up the forest floor.

• The mosses that cover sides of tree trunks.

• The average temperature in the winter.

• The amount of sunlight that reaches the forest floor.

Which of the following are driven by energy from the sun?

• the water cycle

• ocean currents

• winds

• all of the above

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-6

The sun's rays strike Earth's surface at different angles in different laces. This phenomenon occurs because

• Earth is tilted.

• Earth's surface is curved.

• Earth is the correct distance from the sun.

• Earth's surface is rough and uneven.

Tags

NGSS.MS-ESS2-6

Which of these organisms is located at the base of the energy pyramid?

• oak tree

• bat

• squirrel

• earthworm

Tags

NGSS.MS-LS2-3

Herbivores, carnivores, and scavengers are all examples of

• producers.

• decomposers.

• consumers.

• omnivores.

By which method does most thermal energy in the atmosphere circulate?

• conduction

• convection

• condensation

• transpiration

Tags

NGSS.MS-ESS2-6

A surface current is a horizontal movement of ocean water at or near the ocean's surface. Surface currents are caused by

• waves.

• winds.

• a jet stream.

• a rip tide.

Tags

NGSS.MS-ESS2-6

What part of Earth receives the most direct solar energy?

• the poles

• the equator

• midway between the poles and the equator

• equal at all points on Earth's surface

Tags

NGSS.MS-ESS2-6

Air at the equator is warmer and less dense than surrounding air because the equator receives more

• wind.

• air pressure.

• solar energy.

• greenhouse gases.

Tags

NGSS.MS-ESS2-6

At each higher level of the food pyramid

• the amount of energy decreases.

• the number of organisms increases.

• the amount of energy increases.

• the size of organisms increases.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3