middle school review

Which of the following rock layers is oldest?

• Layer G

• Layer F

• Layer C

• Layer A

Volcanic eruptions are caused primarily by the movement of

• Rocks by erosion

• Earth in its orbit

• Planetary winds

• Tectonic plates

Which is the layer of the Earth that experiences convection and drives the movement of Earth’s tectonic plates?

• A

• B

• C

• D

The map below shows dark bands that indicate long mountain ranges on the west coasts of North America and South America.

What causes the formation of these mountain ranges?

• Erosion of continental coastlines by ocean waves.

• Collision of tectonic plates

• Deposition of river sediments entering the ocean.

• Uneven heating of the Earth's surface.

What organelle do plants have surrounding their cells that animal cells lack?

• Cell Wall
• Woody Stems
• Sharp thorns
• Cell Membrane

According to Wegener's hypothesis of continental drift,

• Earth's surface is made up of seven major landmasses
• the continents DO NOT move.
• Earth is slowly cooling and shrinking.
• the continents were once joined together in a single landmass

If an object has particles that are moving very quickly, the object's temperature is probably _____.

• cold
• slow
• big
• hot

Heat from the sun travels to Earth by _____.

• conduction
• convection
• insulation
• radiation

Which is a conductor?

• wool sweater
• aluminum foil
• oven mitt
• wooden spoon

Gravitational potential energy is the potential energy of an object based on its

• Weight and velocity
• Height and acceleration
• Height and mass
• Mass and speed
• Speed and height