8th Grade Earth and Space Science Concepts

What is the mantle compared to in the text?

• The mantle is compared to molten lava.

• The mantle is compared to gooey cheese on a pizza.

• The mantle is compared to a thick soup.

• The mantle is compared to a solid rock layer.

What happens at transform boundaries?

• Plates slide past each other, often causing earthquakes.

• Plates move away from each other, creating new crust.

• Plates collide, leading to the formation of mountains.

• Plates sink into the mantle, causing volcanic activity.

What is the inner core compared to in the text?

• A solid rock formation that is impenetrable.

• The ultimate jawbreaker center that never dissolves.

• A molten lava pool that constantly shifts.

• A giant crystal that reflects light.

What are sedimentary rocks?

• Rocks formed from volcanic activity.

• Rocks that are formed from bits of other rocks, dead organisms, or minerals compressed over time.

• Rocks that are formed under extreme heat and pressure.

• Rocks that are formed from the cooling of magma.

What is the lithosphere?

• The lithosphere is the outermost layer of the Earth, consisting of the crust and upper mantle.

• The lithosphere is a layer of liquid rock beneath the Earth's surface.

• The lithosphere is the Earth's atmosphere that supports life.

• The lithosphere is the crust and upper mantle, broken into tectonic plates.

What are the two types of Earth's crust?

• Continental crust and oceanic crust.

• Mantle crust and lithospheric crust.

• Sedimentary crust and igneous crust.

• Basaltic crust and granitic crust.

What are igneous rocks?

• Rocks formed from the compression of sediments.

• Rocks that form when magma cools and solidifies.

• Rocks that are formed by the metamorphosis of existing rocks.

• Rocks that are created by the erosion of other rocks.

What are exoplanets?

• Planets that orbit stars within our solar system.

• Planets that are formed from the debris of comets.

• Planets outside our solar system with various properties.

• Planets that have been discovered in the Milky Way galaxy only.

What is the outer core made of?

• Solid rock

• Liquid metal, mostly iron and nickel

• Gaseous elements

• Frozen minerals

What is the rock cycle?

• The process of rocks changing types: igneous, sedimentary, and metamorphic.

• A cycle that describes the formation of fossils in sedimentary rocks.

• The process of erosion and weathering of rocks over time.

• A cycle that explains the movement of tectonic plates.