Vocab. 1
Imaginary line that the Earth rotates on.
The axie
Instrument used to observe a distant object
telescope
Changes in the apparent shape of the moon.
phases
Besides the revolution, what else causes the Earth's seasons?
The tilt of the axis
Name the source of almost all of the energy in our solar system?
The sun
A large object that moves around a star.
planet
Jupiter, Saturn, Uranus, Neptune and Pluto are known as....
The outer planets
Objects that move between Mars and Jupiter
The asteroid belt
Name two of types of materials that form the rings around planets.
Rock, ice crystals, dust
Name the one thing Earth has that is unlike other planets?
Life (and water)
Burning sphere of gas
Star
Large spheres made mostly of gas.
Gas giants
The planets between the asteroid belt and sun are called....
The inner planets
How long does it take to compete the cycle of the phases of the moon
28 days
What has a space probe found on Mars that indicates the possibility of water?
Sedimentary Rock
Small mass of ice and dust that orbits the sun
comet
Vehicle sent to explore space.
space probes
Path an object takes when revolving around another object.
orbit
How do the orbits change as planets are closer to the sun?
They orbit faster
Name the inner planets
Mercury, Venus, Earth, Mars
An object that moves around another.
Satellite
Central star and objects that move around it.
The solar system
Spinning movement of the earth.
Rotation
What did finding sedimentary rocks on Mars indicate?
Water, and possible life.
Name the outer planets
Jupiter, Saturn, Uranus, Neptune, Pluto