Unit 1 Review : Changes to Our Earth

Scientists can measure the strength or _________ of earthquakes.

• speed

• magnitude

• temperature

• timing

Scientists use an instrument called a _______to measure earthquakes power.

• seismograph

• sizemograph

• radio signal

• quakster

What layer of the Earth is made up of small and big tectonic plates?

• Crust

• Inner Core

• Outer Core

• Mantle

The Pacific Ring of Fire is an arc around the Pacific Ocean where many volcanoes and earthquakes are formed.

• True

• False

Where is one most likely to find rocks that have become smooth and rounded?

• At the bottom of the ocean
• Deep within Earth
• On top of a hilll
• In a fast moving river

Caves are large empty spaces below the surface of the earth. Which of the following processes forms caves over millions of years?

• Rivers carry mud and silt and then deposit them.
• Water flowing underground carries away minerals.
• Volcanic eruptions leave behind hollow areas.
• Ocean currents move sediments along the beach.

This rock formation formed over many millions of years.
What force most likely created it?

• A glacier pushing rocks ahead of it
• A river bringing rocks down a mountain
• Wind-blown sand carving large rocks
• A volcano blasting rocks great distances

Dunes are large piles of sand that shift slowly around in deserts and on beaches. What causes the dune to move from place to place?

• Rushing rivers
• Blowing winds
• Freezing water
• Weathering rock

Draw an example of Weathering

Deposition is

• When the earth's surface is broken into smaller pieces through natural causes.

• When rocks or sediment fall down or are carried away from their source

• When pieces of the Earth's surface are deposited somewhere.

• A ballet move