The Rock Cycle

What information would be most useful to know when identifying rocks?

• color of the rock
• temperature of the rock
• how the rock was formed
• how the rock feels

You found a rock that is black and has a glassy texture. You can tell that this rock was formed when lava cooled suddenly and hardened. What type of rock did you find?

• sedimentary rock
• metamorphic rock
• igneous rock

You find a rock along the river. You can see many smaller rocks have been cemented and compacted together to form this rock. What type of rock did you find?

• sedimentary rock
• metamorphic rock
• igneous rock

While exploring in the woods, you find a rock that has wavy bands of white and black. When you look at it closely, you can see small crystals have formed along the wavy bands. You can tell that this rock was formed when a rock experienced intense heat and pressure. What kind of rock did you find?

• sedimentary rock
• metamorphic rock
• igneous rock

You found a rock called marble. This marble used to be a rock called limestone, but it has changed due to intense heat and pressure. Marble is an example of which type of rock?

• sedimentary rock
• metamorphic rock
• igneous rock

You are looking at a rock called sandstone. You can see the tiny pieces of sand that have been compacted and cemented together. What kind of rock is sandstone?

• sedimentary rock
• metamorphic rock
• igneous rock

Which natural forces are needed to create a sedimentary rock?

• heat and pressure
• melting and cooling
• weathering/erosion and compaction/cementation

Which natural forces are needed to create a metamorphic rock?

• heat and pressure
• melting and cooling
• weathering/erosion and compaction/cementation

Which natural forces are needed to create an igneous rock?

• heat and pressure
• melting and cooling
• weathering/erosion and compaction/cementation

Take a look at the rock cycle diagram below. Which rock type would correctly fill in blank #1?

• igneous rock
• metamorphic rock
• sedimentary rock

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2