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19-20 Midterm Review

Across
The strength of the force of gravity depends on the masses of the objects and the ______ between them.
Soil formation begins with the weathering of ________.
Dead plants and litter are often left on the ground to cover up the soil...this is an example of soil __________.
Soil that is rich in humus has high _______.
Acids from plant roots slowly dissolving rock is an example of _______ weathering.
Most geologists think the movement of Earth's tectonic plates are caused by _____________ in the mantle. (2 words)
The _____ planets are made of gas, huge, have many moons and are spaced far apart from each other.
A _________ rock is full of tiny, connected air spaces and weathers quickly because more of it exposed to weathering.
_______ are different from meteoroids and asteroids in that they contain ice.
Animals digging their homes underground is an example of ________ weathering.
A rocky object from space that hits Earth's surface.
A waning gibbous moon occurs ______ a full moon.
The A horizon is where you will find ______, a dark, crumbly fertile mixture.
Down
The boundary where two plates are moving away from each other
The _____ planets are smaller, solid, have 0, 1 or 2 moons, and are closer to each other.
The sun is in the center of the solar system in the _________ model.
The two things that keep the moon in orbit around Earth, and the planets in orbit around the sun, is gravity and _______.
A rock with metallic minerals in has started to crumble and turn reddish in color...this is an example of ______ weathering.
The process of ____________ is happening all along the mid-Atlantic ridge; new crust is being formed.
During a ______ eclipse, the moon is in between the Earth and sun.
Soil is a ________ resource because it is important to all living things.
________ weathering causes the mineral composition of rocks to change
The boundary where two plates are colliding into each other
The left half of the moon is lit up during a _____ quarter moon.
A _______ climate has a faster rate of weathering.
The process of dense oceanic crust sinking under less dense continental crust and going back into the mantle.
The Big Bang Theory is an idea that describes the ________ of the universe.
What is the name of our galaxy? (two words)
A deep ocean _____ is formed at a subduction zone.