Exploring Rocks and Minerals

What are the three main types of rocks?

• Igneous, Sedimentary, Metamorphic

• Coal, Sandstone, Slate

• Granite, Limestone, Clay

• Basalt, Shale, Quartzite

How are igneous rocks formed?

• Igneous rocks are formed through the metamorphism of existing rocks.

• Igneous rocks are formed from the cooling and solidification of magma or lava.

• Igneous rocks are formed from the erosion of sediment.

• Igneous rocks are formed by the compression of organic materials.

What is the difference between sedimentary and metamorphic rocks?

• Sedimentary rocks are formed from particles and layers, whereas metamorphic rocks are formed from the transformation of existing rocks under heat and pressure.

• Sedimentary rocks are always found near water, whereas metamorphic rocks are found only in mountains.

• Sedimentary rocks are formed from volcanic activity, while metamorphic rocks are created from cooling magma.

• Sedimentary rocks are formed from organic materials, while metamorphic rocks are formed from minerals alone.

Name a property used to identify minerals.

• Luster

• Weight

• Color

• Hardness

What is the hardness scale used for minerals called?

• Brinell scale

• Rockwell scale

• Mohs scale

• Vickers scale

How can you tell if a mineral is metallic or non-metallic?

• A mineral is non-metallic if it has a dull luster and is opaque.

• A mineral is metallic if it is heavier than water.

• A mineral is metallic if it has a shiny luster and conducts electricity; otherwise, it is non-metallic.

• A mineral is metallic if it is found in igneous rocks.

What is one common use of granite?

• Flooring

• Countertops

• Sculptures

• Road construction

How do sedimentary rocks typically form?

• Sedimentary rocks develop from the metamorphism of igneous rocks.

• Sedimentary rocks form from volcanic activity.

• Sedimentary rocks are created by the cooling of magma.

• Sedimentary rocks typically form from the accumulation and lithification of sediments.

What process leads to the formation of metamorphic rocks?

• Sedimentation of minerals in water

• Formation from volcanic activity

• Weathering of rocks over time

• Metamorphism of existing rocks due to heat, pressure, and fluids.

What is a mineral's streak?

• The color of the powder left by a mineral when scratched on a hard surface.

• The hardness of a mineral on the Mohs scale.

• The size of a mineral's crystals.

• The luster or shine of a mineral's surface.