What are the basic types of rocks found on earth?

• Igneous, sedimentary, metamorphic

• Volcanic, plutonic, extrusive

• Gneiss, basalt, obsidian

How is an igneous rock formed?

• From the earth's fossils

• From cooled molten magma

• From the deposits of sediments

What type of rock forms when magma hardens beneath Earth's surface?

• Intrusive igneous rocks

• Extrusive igneous rocks

• Intrusive metamorphic rocks

Characteristics that are used to identify rocks and minerals.

• Presence of crystals

• permeability

• The salt composition

We can usually find fossils in:

• Igneous

• metamorphic

• sedimentary

Which of the following is a greenhouse gas?

• Carbon dioxide

• Oxygen

• Nitrogen

(a)   can cause global warming.

• Trees growing

• Fish swimming

• Volcanoes

Humans burn (a)   fuels which can add greenhouse gases.

• Coal

• Natural Gas

• Oil

• Biomass

What could one effect of global warming be?

• More island forming

• rise of sea level

• more land slides

What do green gases do?

• They cause more heat to be kept out of the Earth.

• They absorb and hold in heat.

• They cause acid rain.