Earth History Unit Test

types of rock that are formed by the deposition of material at the Earth's surface and within bodies of water.

• sedimentary rock

• index fossil

• metamorphic rock

• cast fossil

formed through the cooling and solidification of magma or lava.

• igneous rock

• metamorphic rock

• The Rock

• minerals

type of rock which has been changed by extreme heat and pressure

• metamorphic rock

• mold fossil

• volcano

• igneous rock

states that younger rock is found above older rock when comparing undisturbed sedimentary rock layers

• law of superposition

• trace fossil

• matter can't be created or destroyed

• atoms

The diagram shows a geologic cross-section from a region. What are the relative ages of the rocks from oldest to youngest?

• W, V, X, Z, and Y

• W, Y, V, X, and Z

• W, V, X, Y, and Z

• W, V, Y, X, and Z

Which of the following statements is true?

• Volcanoes and earthquakes are often near plate boundaries

• Volcanoes occur wherever there are tall mountains

• Earthquakes cause volcanoes in the same location to erupt violently

• Volcanoes and earthquakes occur only where plates are colliding with each other

In which layer of Earth do most earthquakes occur?

• Inner core

• Outer core

• Mantle

• Crust

There are no tectonic plates under the ocean

• True

• False

The continents are made of tectonic plates

• True

• False

What causes tectonic plates to move?

• Dense fluid in the asthenosphere sinks dragging the plates along as it sinks.

• As Earth rotates it causes the continents to shift and move.

• Volcanoes add new land to tectonic plates making them heavier and causing them to sink.

• Waves from the ocean push the plates along.