Earth Science

A volcano which is composed of lava flows and pyroclastic material and which is steep-sided and very tall is known as:

• Syncline

• Composite cone

• Anticline

• none of these

The solidified lava of a volcano belongs to which rock family?

• igneous

• metamorphic

• sedimentary

• fossilized

Iceland has a great deal of volcanic activity. The reason for this is:

• it was formed above a mid-ocean rift.

• it is part of the "Ring of Fire".

• two tectonic plates are rubbing against each other under Iceland.

• the American plate is diving under the European plate in this region.

Biosphere describes the earth realm where life occurs What describes the entire solid earth realm and is composed of mineral matter?

• THERMOSPHERE

• EXOSPHERE

• STRATOSPHERE

• LITHOSPHERE

What percentage of the earth's atmosphere does Oxygen comprise?

• 75%

• 50%

• 21%

• 32%

The tanning rays of the sun are called:

• infrared rays

• visible light

• ultraviolet rays

• gamma rays

Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities?

• oxygen and hydrogen

• ozone and methane

• nitrous oxide and sulfur dioxide

• methane and carbon dioxide

• ozone and carbon monoxide

Cirrus clouds are:

• rain clouds

• thick and fleecy

• made of ice crystals

• low cloud layers

The name of a rapid rise of coastal water that accompanies the arrival of a cyclone is called:

• hurricane

• storm surge

• tidal wave

• cyclonistat

Galena is a primary ore of which of the following metals?

• lead

• tungsten

• zinc

• silver