Science TM Final Review

What are the greenhouse gases?

• carbon dioxide, methane, water vapor

• water vapor, ice crystals

• carbon dioxide, methane, oxygen, argon

• methane, nitrogen, helium

Which planet feels the greatest gravitational pull from the sun?

• Mars

• Pluto

• Saturn

• Mercury

If the moon is between the earth and sun, which phase of the moon do we see?

• First quarter

• Full moon

• New moon

• crescent moon

The hottest stars

• include earth's sun.

• are less massive.

• are furthest from the sun.

• are the brightest stars.

The circular movement of the magma in the Earth's mantle that causes the crust to move is called

• convection

• conduction

• deposition

• drifting

Why do the planets move around the sun?

• The sun's atmosphere is powerful.

• The sun has a strong gravitational pull.

• The sun has strong radiation.

• The sun gives off a lot of energy.

Why do we only see one side of the moon?

• The moon rotates at the same speed the earth rotates.

• The moon doesn't rotate.

• The moon rotates at the same speed it revolves around earth.

• The moon revolves at the same pace the earth rotates on its axis.

Density differences in the ocean waters are due to different salt concentrations and differences in

• waves

• temperature

• plate tectonics

• volcanic activity

Helium in the sun is produced from

• nuclear fusion.

• changing hydrogen from a liquid to a gas

• chemical reaction

• nuclear fission

Of the terrestrial planets, Earth and Venus are which of the following?

• about the same size

• different in density

• similar to gas planets

• very different in size