Earth Science 1
Forces and Motion
Earth Science 2
Earthquakes and Volcanoes
Chance
100
Studying the ocean floor, scientist found rocks showing magnetic
reversal
100

A push or a pull exerted on an object is called this.

What is Force?

100
The youngest rocks in the ocean floor are located where
mid-ocean ridges
100
The places between plates moving together are called
convergent boundaries
100
Most earthquakes and volcanic eruptions occur at
plate boundaries
200
Tectonic plates move around by
Convection Currents
200

The force of gravity acts on an object that has this.

What is Mass?

200
Has to be present for secondary succession to take place
Soil
200
Plates move apart at
divergent boundaries
200
Means "all land"
Pangaea
300
Seafloor spreading occurs because
hot, less-dense materials belwo Earth's crust is forced upward toward the surface.
300

Newton's First Law of Motion is also called

What is "Law of Inertia"

300
The seafloor spreading theory was proposed by
Harry Hess
300
Molten rock inside Earth is
magma
300
The results of plate movement can be seen at
rift valleys and plate boundaries
400
Cold,dry area where the sun barely rises during the winter
Tundra
400

An apple is falling from a tree. The apple´s speed increases as it falls. How does the apple´s motion affect it´s mechanical energy AND kinetic energy?

Mechanical energy remains the same and its kinetic energy increases.

400
The cycle of heating, rising, colling, and sinking is called a
convection current
400
A broad, shallow volcano with lava sides is a
Shield Volcano
400

Moving parts in machinery are coated in oil and grease to reduce this.

What is Friction?

500
The presence of the same _______________________ on several continents supports the idea of
rocks and fossils
500

A roller coaster at the bottom of a big hill has what kind of energy

KINETIC

500
the alignment of iron-bearing minerals in rocks when they formed reflects the fact that Earth's _________has reversed itself several times in its past.
magnetic field
500
The slowest and largest seismic waves that coause most of the destruction during an earthquake
Surface wave
500
Subduction takes place at
convergent plate boundaries
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