Plate motion

Earth's outermost layer of hard, solid rock that is underneath the soil, vegetation, and water

• plate

• mantle

• outer layer

• surface

the place where two plates meet

• cross section

• pattern

• surface

• plate boundary

a diagram that shows what the inside of something looks like

• outer layer

• cross section

• plate boundary

• plate

something we observe to be similar over and over again

• rate

• surface

• analyze

• pattern

What is Earth's outer layer undenearth the surface in the image? / ¿Cuál es la capa exterior de la Tierra debajo de la superficie en la imagen?

• sand and water / arena y agua

• sand / arena

• water / agua

• hard solid rock / roca sólida dura

Plate Boundary

• The place where two plates meet; most volcanoes and earthquakes occur here.

• The location where the food falls onto the table.

• Where one country ends and another begins.

• The edge of your patella.

A team of geologists wants to study hard, solid rock under the surface of Earth. The team is considering drilling down in the North Atlantic Ocean (1) and in Sierra Leone (2). Where will the team find hard, solid rock?

• only under 2, because Earth’s outer layer is made of hard, solid rock under continents but not under the ocean

• under 1 and 2, because Earth’s entire outer layer is made of hard, solid rock

• neither under 1 nor 2, because there is water under both places

• neither under 1 nor 2, because there is sand and gravel under both places

The map in the picture shows tectonic plate boundaries. This map would be useful in predicting the location of future

• droughts

• hurricanes

• earthquakes

• tornadoes

One of the very large sections of hard, solid rock making up Earth's outer layer?

• Mantle

• Pattern

• Inner core

• Plate

Scientists often study cross sections to better understand what the inside of something looks like. If we took a cross section of a potted plant by cutting it vertically, what would the cross section look like?

• A

• B

• C

• D