Types of Rocks

What is the origin of the word “Igneous”?

• • Greek for “earth”

• • Latin for “fire”

• • French for “stone”

• German for “rock”

How are intrusive igneous rocks formed?

• Intrusive igneous rocks are formed from the cooling of lava on the Earth's surface.
• Intrusive igneous rocks are formed from sedimentary processes over millions of years.
• Intrusive igneous rocks are formed by the compression of existing rocks under high pressure.
• Intrusive igneous rocks are formed from the cooling of magma beneath the Earth's surface.

Which of the following is an example of an igneous rock?

• Shale
• Sandstone
• Granite
• Limestone

Where are sedimentary rocks most commonly found?

• In volcanic regions
• In sedimentary basins, riverbeds, lakes, and ocean floors.
• Within igneous rock formations
• On mountain peaks

Which rock is given as an example of a metamorphic rock?

• limestone
• basalt
• slate

• granite

What do we usually see in sedimentary rocks?

• Igneous rock formations
• Fossils, layers, and sediment particles.
• Metamorphic minerals
• Volcanic ash layers

What are the three main types of rocks?

• Igneous, Sedimentary, Metamorphic
• Coal, Sandstone, Slate
• Basalt, Shale, Quartzite
• Granite, Limestone, Clay

What process transforms igneous and sedimentary rocks into metamorphic rocks?

• Melting and evaporation

• High temperature and pressure

• Freezing and thawing

• Erosion by wind

What percentage of the Earth’s crust is made up of igneous rocks?

• 50%
• 95%

• 75%
• 80%