Types of Rocks

?What characteristic do sedimentary rocks often have

• glassy surfaces

• tiny crystals

• weather patterns

• striped layers

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

What is sediment?

• weather that occurs around fossils

• a kind of tall, jagged cliff

• rock that includes shell and ice

• pieces of rock, sand, and dirt

How does sediment become sedimentary rock?

• Sediment deposits in one place and settles in layers. The weight of the sediment squeezes the layers together into rock.

• Sediment deposits in 1 place and mixes together. Wind, weather and ice freeze the mixture into rock.

• Sediment settles on limestone cliffs and inside caves. There, it forms minerals and turns into rock.

• Sediment mixes with seashells and fossils. Then, wind, water and ice erode the mixture into sedimentary rock.

Tags

NGSS.MS-ESS2-1

What keeps sedimentary rock stuck together?

• fossils

• coquina

• minerals

• seashells

What is the most common igneous rock in the solar system?

• dolerite

• granite

• basalt

• obsidian

What happens when magma cools slowly?

• It forms big crystals.

• It forms salt.

• It can explode again.

• It forms small crystals.

How does magma form rocks that look smooth and glassy?

• by cooling very slowly

• by cooling very quickly

• by hardening under water

• by staying below Earth's surface

Tags

NGSS.MS-PS1-4

What does "metamorphic" mean?

• grainy and porous

• changing in form

• having layers

• full of colors

How does metamorphic rock form?

• Heat and pressure inside Earth change existing rock into new, different rock.

• Sediment layers on top of itself, and gravity and pressure turn it onto new rock.

• Magma deep below the Earth's surface hardens into metamorphic rock.

• Wind, rain, and other weather turn lava from volcanoes into metamorphic rock.

What state is metamorphic rock in when it is under the Earth's surface?

• liquid

• solid

• magma

• gas

Tags

NGSS.MS-ESS2-1