• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/68

Click to flip

68 Cards in this Set

  • Front
  • Back
Atmosphere
The thin layer of air between Earth's surface and outer space
Axis
The imaginary line on which the Earth is tilted and rotates
Condensation
The change in a substance from a gas to a liquid
Conservation
The careful use and protection of natural resources
Constellation
A group of stars that seem to form a pattern in the sky
Deposition
The process of dropping, or depositing, sediment (soil) in a new location
Diameter
Straight line passing through the center of a circle or sphere
Dissolve
To mix very evenly and separate into particles too small ot be seen
Earth
The third planet from the sun
Earthquake
A movement and shaking of the Earth caused by shifting of the Earth's plates and the sudden release of energy in the Earth's crust
Erosion
The carrying away of rock or soil by wind, water, or ice
alternative energy sources
a source of energy other than the burning of fossil fuels
Evaporation
The process by which a liquid becomes a gas
Fault
A crack in the Earth where earthquakes occur
Glacier
A large piece of ice that changes the landforms as it moves
Gravity
The force that causes attraction between objects that have mass
Air mass
A large body of air with properties similar to the land over which it forms
Humus
The remains of dead plants and animals that mix with soil
crust
the rocky surface that makes up the top of the lithosphere and includes the continents and the ocean floor
Air pressure
The weight of the air or atmosphere; a cause of weather
craters
huge dents on the surface of the moon
convection currents
a mass of liquid or gas that in in motion
continent
one of several large areas of land on Earth
constructive forces
forces which create new landforms
Mercury
The closest planet to the sun
Moon
A natural satellite that orbits Earth
groundwater
precipitation that soaks into the ground.
destructive forces
forces which breaks down and destroys landforms.
Nonrenewable resource
A resource that can be used up
hydrosphere
Earth's water, whether found in oceans or continents, including fresh water in ice, lakes, rivers and underground water
Orbit
The curved path around an object such as the path a planet follows around the sun
geologist
a scientist who studies Earth
Phases
The different shapes of the moon during the lunar cycle
inertia
the tendency of a moving object to keep moving in a straight line
Pluto
The smallest planet and the one farthest from the sun
Pollution
The release of harmful substances into the environment
Precipitation
Any form of water that falls from the clouds to Earth
mantle
the thickest layer of the Earth, lying just under the crust
lava
magma that reaches Earth's surface
Recycle
To reuse matierals
Renewable resource
A resource that can be replaced in a short time
magma
hot, molten rock deep below the Earth's surface
Revolution
The trip the Earth makes arond the sun once every 265 1/4 days
planet
any of the 8 large bodies that travel around the Sun and shine by relecting its light.
Rotation
The turning of the Earth on its imaginary axis
Satellite
A natural body, such as the moon, that orbits another object
Seasons
Times of the year caused by the revolution of the Earth around the sun and the tilt of the Earth on its axis
Sediment
Silt, or soil, good for plant growth because it absorbs water
runoff
precipitation or melted snow that does not soak into the ground
Sedimentary rock
Rock that contains fossils
Soil
A resource composed or rock and mineral fragments, humus, air, and water
plates
pieces of the Earth's crust broken by upward pressure from the mantle
Solar energy
Energy that comes from the sun
particles
a very small piece or part
Solar system
The sun, nine planets, and the other obejects that orbit the sun
Sun
The star closest to Earth that provides energy
Sunspots
Dark areas on the sun's photosphere (surface); sunspots appear dark because they are cooler than the rest of the sun
Tides
The movement of the ocean caused by the gravitational pull of the moon
Water cycle
The process by which water is renewed and used over and over again on the Earth
Weather
The condition of the atmosphere at a certain place and time
Weathering
A process that breaks down rocks
24 hours
The length of night and day on Earth
365 1/4 days
The length of one year; the time it takes the Earth to orbit the sun one time
radiation
The giving off of infrared rays through space.
transpiration
The loss of water through a plan's leaves, which draws water up through the plant to replace it.
lithosphere
the hard, outer layer of Earth, about 100 km thick
resource
any material that helps support life on earth
wind energy
converting the wind into an energy resource