3S Science Chapter 8 - Soil, Rocks, & Minerals

What are hard pieces of the earth's surface called?

• soil

• rocks

• humus

• dirt

What is the number of groups scientists use to classify rocks?

• one

• two

• three

• there are too many to count

How do scientists classify rocks?

• by how they look

• by how they are formed

• by their size and shape

• by how they sound

What is an opening in the earth that allows melted rock to come to the surface?

• igenous

• volcano

• sedimentary

• bedrock

What type of rock is formed when layers of sediment are pressed together and harden?

• igneous

• sedimentary

• metamorphic

• minerals

What type of rock is formed when melted rock cools?

• igneous

• sedimentary

• metamorphic

• fossils

What type of rock is formed when igneous or metamorphic rocks are changed by great heat and pressure?

• igneous

• sedimentary

• metamorphic

• lava

What are pieces of rock that drop and fall to the bottom of the water?

• fossils

• dirt

• rocks

• sediment

What are examples of igneous rocks?

• graphite

• granite

• obsidian

• limetone

What are examples of sedimentary rocks?

• graphite

• granite

• obsidian

• limestone