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8th Grade Science

Study set for 8th grade science finals.

What causes most sediment to wash in a river? Mass Movement and Runoff
Where do ocean waves get their energy? From the wind that blows across the surface.
How do water molecules move through the water? Up and down
What is a rivers flow? The volume of water in a river at a given time.
Who is Alfred Wegener? A German scientist who created the theory of continental drift.
What is continental drift? The idea that the continents were once joined in one single landmass and have since moved apart.
Why was Wegener's theory rejected? He could not identify the cause of the continents moving.
What causes Earth's tectonic plates to move? Convection currents.
What is a mid ocean ridge? An underwater mountain chain where new ocean floor is produced. They are found in all oceans.
Where does air pollution come from? Burning fossil fuels.
What is lake effect snow? When cool dry air moves across warm water, and back over land.
What is the biggest safety concern during a snowstorm? High winds
What does a cold front look like? Triangles
What does a warm front look like? Half circles
What clouds do thunderstorms form in? Large cumulonimbus clouds
How do we collect weather datas? Balloons and satellites
Where do hurricanes form? Over warm ocean water
Created by: kayla4001