All About Rocks

A fourth grade class observes rocks. One sample is found in layers and feels rough and grainy. Which type of rock is it? 

• sedimentary rock
• igneous rock
• metamorphic rock
• granite

Obsidian, granite, and basalt are rocks formed from molten rock that has cooled. What kind of rocks are they?

• sedimentary rock
• igneous rock
• metamorphic rock
• fossils

What is the movement of weathered materials called?

• weathering
• erosion
• evaporation
• ice wedging

What direction does erosion move Earth materials?

• toward the mountains

• sideways

• downward

• upward

Which soil layer would you expect to find the largest rocks in?

• subsoil

• topsoil

• sand

• bedrock

Rocks are made of chemicals called?

• pumice

• sedimentary rocks

• minerals

• sandstone

Igneous rocks are made from?

• cooling magma or lava

• heat

• minerals

• water

What is an example of an igneous rock?

• limestone

• marble

• pumice

• sandstone

Rocks that were made when layer upon layer of sand and debris settled down together are called?

• Metamorphic rocks

• Sedimentary rocks

• Igneous rocks

What is an example of a sedimentary rock?

• pumice

• limestone

• obsidian

• marble