small rocky bodies, about 1,000 km or less in diameter, in space often found between the orbits of Mars and Jupiter
What is asteroids
100
any form of water that falls from the clouds; e.g. rain, snow, hail, sleet
What is precipitation
100
the time required for a planet or moon to rotate once on its axis
What is day
100
the solid, outer layer of the Earth that consists of the crust and the rigid upper part of the mantle
What is lithosphere
100
heat transfer by moving particles in fluids, and the thermal energy that they carry
What is convection
200
a small body composed of ice and rock that travels in an elliptical orbit around the sun
What is comet
200
the process of a liquid changing into a vapor or gas
What is evaporation
200
curved path followed by a planet, moon, or satellite as it revolves around an object
What is orbit
200
group of natural processes, including weathering, dissolution, abrasion, corrosion, and transportation, by which material is worn away from Earth's surface
What is erosion
200
the transfer of energy by direct contact, from one substance to another
What is conduction
300
a natural satellite revolving around a planet
What is moon
300
process of a gas changing to a liquid, such as water vapor into water droplets
What is condensation
300
the turning of an object on its central axis
What is Rotation
300
when plate boundaries move away from each other
What is diverge
300
event in which the shadow of Earth falls on the moon
What is lunar eclipse
400
any large natural, spherical object that revolves around a star
What is planet
400
the long-term weather conditions for a region, generally determined by several years of records
What is climate
400
the movement of an object around another, central object; e.g. Earth revolves around the sun
What is revolution
400
plate boundaries of Earth’s crust pushing together
What is converging
400
when the moon is directly between Earth and the sun, casting its shadow on Earth
What is solar eclipse
500
a celestial body made of hot gases in which nuclear fusion occurs and from which energy is radiated
What is star
500
the mixture of gases surrounding Earth and other planets
What is atmosphere
500
the time it takes for a planet to complete one revolution around a star
What is year
500
the gradual movement of continents by tectonic plates under Earth’s surface which causes land masses to move toward or away from one another
What is continental drift
500
energy transfer without direct contact, as in the transport of heat from the sun to Earth