Classifying Rocks

Which of the following processes would produce metamorphic rocks?

• Gradual erosion

• Slow cooling

• Rapid heating

• Extreme pressure

Which of the following best describes how igneous rocks are formed?

• Rock changed by heat and pressure

• Melted rock that cools

• Tiny pieces of rock cementing together

• Layered rock splitting apart

Jarrel went on an archaeological dig one weekend with his grandfather. He found a fossil inside sedimentary rock.What is sedimentary rock made from?

• Metal ores that are exposed to moisture

• Molten lava that has cooled

• Pieces of other rocks and fossilized organisms

• Large boulders close together

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Based on their different processes of formation, how many categories of rock are there?

• Two

• Three

• Four

• Five

Igneous rock is made from molten rock. What is molten rock?

• Rock that is molded

• Rock that is moving

• Rock that is mixed

• Rock that is melted

In order for a rock to be classified as igneous, what must have happened during its formation?

• Solid rock changing under pressure

• Liquid rock changing its physical state

• Small rocks becoming cemented together

• Layered rock breaking into smaller pieces

Rocks can be formed during different processes or Earth activities. Which of the following best describes sedimentary rocks?

• Pieces of other rocks and fossilized organisms

• Rocks made from the melting of other rocks

• Pieces of rock made from the cooling of rocks

• Rocks formed from heat and pressure

Tags

NGSS.MS-ESS1-4

Rocks on Earth are formed from different processes and are classified based on their formation. Metamorphic rock is produced by which of the following processes?

• Earth decay

• Gradual erosion

• Pressure and heat

• Slow cooling