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Science Vocab Nov 10-23
Pretest Nov 14
1. Revolve- To keep turning in a circle or orbit around a central point or
object.
2. Axis- An imaginary line through the middle of an object, around which that
object spins, as in Earth’s axis.
3. Orbit- The invisible path followed by an object circling a planet, the sun, etc
4. Downdraft- Cold, dense air that sinks.
5. Updraft- Warmer, less dense air that rises.
6. Coriolis Effect- The effect caused by the Earth turning on its axis that causes
falling objects to move rightward in the northern hemisphere and leftward
in the southern hemisphere.
7. Convection Cell- A pattern of rising and sinking air formed from updrafts
and downdrafts that forms winds.
8. Polar Easterlies- Winds that blow from high pressure areas in the North
and South poles.
9. Hygrometer- An instrument that is used to measure humidity in the air.
10.Front- The edge of a mass of cold or warm air.
11.Air Mass- A body of air that has the same levels of temperature and
humidity.
12.Humidity- The amount of moisture in the air.
13.Salinity- Saltiness, or the amount of salt in something.
14.Mineral- A substance found in nature that is not an animal or a plant. Gold,
salt, and copper are all minerals.
15.Current- The movement of water in a river or on an ocean.
16.Sea Level- The average level of the surface of the ocean, used as a starting
point from which to measure the height or depth of any place.
17.Atmosphere- The mixture of gases that surrounds a planet, or the air in a
particular place.
18.Gravity- The force that pulls things down toward the surface of the Earth
and keeps them from floating away into space.