3rd six week review 8th

Front

What season is the Southern Hemisphere in when it is summer?

Back

Summer.

Front

What occurs as a result of the collision of two tectonic plates?

Back

Subduction occurs because oceanic crust is denser than continental crust.

Front

In which galaxy is our solar system located?

Back

Milky Way.

Front

Who first proposed the continental drift theory in 1912?

Back

Alfred Wegener.

Front

What is the typical length of day and night at the equator throughout the year?

Back

Nearly equal throughout the year.

Front

What is subduction in tectonic plate theory?

Back

Subduction is the process where one tectonic plate moves under another and is forced into the mantle.

Front

What is the definition of a galaxy?

Back

A galaxy is a massive system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

Front

What is the difference between oceanic and continental crust?

Back

Oceanic crust is denser and thinner than continental crust.

Front

What is the significance of the Milky Way galaxy?

Back

The Milky Way is the galaxy that contains our solar system and is part of the Local Group of galaxies.

Front

What is the theory of continental drift?

Back

The theory that continents have moved over geological time and were once joined together.