Rocks Rock Passage

What is the molten liquid beneath the Earth's surface called?

• Lava

• Magma

• Sediment

• Obsidian

Which type of rock is formed when magma or lava cools and hardens?

• Sedimentary

• Metamorphic

• Igneous

• Limestone

Where are sedimentary rocks mostly formed?

• In volcanoes

• In bodies of water

• In deserts

• In forests

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-4

According to geologists, about how long ago did rocks first form?

• about 5 million years ago

• about 8.3 billion years ago

• about 6.3 billion years ago

• about 3.8 billion years ago

What two parts of the earth do rocks make up?

• Crust and mantle

• Core and crust

• Mantle and core

• Atmosphere and crust

Geologists organize rocks into three different categories. Name these categories.

• Igneous, sedimentary, metamorphic

• Volcanic, sedimentary, crystalline

• Igneous, volcanic, metamorphic

• Sedimentary, crystalline, volcanic

Based on the following sentence, what does sediment mean? "Over time the sediment is compressed and hardens into solid rock."

• Bits of rock, sand, and minerals

• Layers of rock

• Melted lava or magma

• Heat and pressure

Which answer choice best describes how a metamorphic rock is formed?

• Layers of sediment compressing and hardening into rock

• Already existing rocks change into new rocks through heat and pressure

• Molten lava cooling and hardening underneath the earth’s surface

• Rocks are forming in bodies of water, such as rivers, lakes, and oceans

Which sentence best describes this passage?

• Geologists are still unsure about how rocks are formed

• Rocks are everywhere and geologists classify them into three different groups

• Rocks have been studied for a long time and geologists are still learning about the way they are formed

• There are three types of rocks and they are all formed the same way

Based on the passage, what is a geologist?

• a. a type of rock made from the hardening and cooling of lava

• b. a type of metamorphic rock

• c. a part of the earth’s crust and surface

• d. a scientist who studies the earth and rocks