Rotation or Revolution
Earth's Systems
Water Cycle
Forces
Matter
100
a planet's orbit around the sun
What is revolution
100
system that includes all of the water on Earth (lakes, river, oceans, glaciers)
What is the hydrosphere
100
percentage of Earth that is land
What is 30%
100
the force that pulls objects towards the center of the Earth
What is gravity
100
the amount of matter in an object
What is mass
200
a planet's year
What is a revolution
200
system that includes all of the gases on Earth; "air"
What is the atmosphere
200
97% of Earth's water is _______
What is saltwater (found in oceans)
200
a force that stops or slows motion when objects rub together
What is friction
200
the amount of space an object takes up
What is volume
300
Earth's spin around itself
What is rotation
300
system that includes all of the living plants and animals in the biomes of Earth
What is the biosphere
300
water changing from a liquid to a gas (caused by heat)
What is evaporation
300
a push or pull that causes an object to move, stop, or change directions
What is a force
300
state that has no definite volume and no definite shape
What is a gas
400
cause of Earth's seasons
What is revolution
400
system that includes the non-living soil, rocks, and minerals that make up the land of Earth
What is the geosphere
400
water changing from a gas to a liquid (cooling of water in the atmosphere to form clouds)
What is condensation
400
the force on an object that acts in the direction opposite of its motion
What is air resistance
400
state of matter that has a definite volume and a definite shape
What is a solid
500
cause of Earth's day and night
What is rotation
500
percentage of Earth that is water
What is 70%
500
water droplets that fall from the atmosphere in the form of rain, snow, sleet, or hail
What is precipitation
500
which force causes an object to fall when you drop it?
What is gravity
500
state of matter that has a definite volume but no definite shape (takes the shape of its container)
What is a liquid
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