The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface.  If Jim is exploring layers of rock and he moves deeper into the Earth, what happens to the age of the rock older or younger?
older
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Warm water cant hold as much dissolved oxygen as cool water, so an increase in the temperature of water decreases the amount of oxygen it contains.  Mary is taking measurements of the amount of oxygen in samples of water. If she measured the total levels of dissolved oxygen in a sample at 70 degrees fahrenheit and compared it to a sample at 80 degrees fahrenheit, which would contain more dissolved oxygen 80 degrees fahrenheit or 70 degrees fahrenheit?
70 degrees fahrenheit
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For a given medium, sound has a slower speed at lower temperatures.  When Dave screams outside he notices that the sound travels at different speeds in different temperatures. The sound travels slower when it is cold. or hot?
cold.
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Bigger waves have more energy.  A taller wave on the ocean has more or less strength than a smaller wave?
more
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