Earth Science Quiz

Where are igneous rocks particularly still being formed on Earth?

• In deserts

• In oceans

• In and around volcanoes

• In forests

What is the main difference between extrusive and intrusive igneous rocks?

• Extrusive rocks form below the surface, intrusive rocks form at the surface

• Extrusive rocks form at the surface, intrusive rocks form below the surface

• Extrusive rocks are sedimentary, intrusive rocks are metamorphic

• Extrusive rocks are formed from water, intrusive rocks are formed from air

What is the result of slow-cooling magma?

• It produces very small crystals

• It produces no crystals

• It produces larger crystals

• It produces irregularly shaped crystals

What are typical minerals found in light-coloured igneous rocks?

• Quartz and feldspars

• Olivine and pyroxene

• Calcite and dolomite

• Hematite and magnetite

What is the colour of basalt?

• Light

• Dark

• Green

• Red

Which extrusive igneous rock is light grey and floats in water?

• Basalt

• Scoria

• Obsidian

• Pumice

What are the three main minerals found in granite?

• Quartz, feldspar, and biotite

• Quartz, mica, and calcite

• Feldspar, mica, and calcite

• Biotite, mica, and quartz

What caused the engines of British Airways Flight 009 to fail on June 24, 1982?

• Bird strike

• Volcanic ash

• Mechanical failure

• Fuel shortage

Label the three key layers of the earth

b

c

d

Magma

Lithosphere

Ocean

Core

Mantle

What is the difference between lava and magma?