18 questions
Distances within our Solar System are based upon the average distance between Earth and the Sun is called an:
Unit
Astronomical Unit
Kilometer
Celsius
Small, dense rocky planets made of rock and iron are called
Planet
Solar Flare
Terrestrial Planets
Moon
Mercury is this many kilometers from the sun:
1,000,000,000
5
58,000,000
8,000,000
These are the terrestrial planets:
Venus is this many kilometers from the Sun:
108,000,000
8,000,000
108,000,000,000
1,000,000
Surface is hidden by thick clouds of mostly carbon dioxide.
Mercury
Venus
density, size, and structure are similar to Earth's
Venus
Mercury
Mars
Earth
Surface is heavily cratered from collisions with small, rocky objects.
Venus
Mercury
Mars
Earth
Long cliffs also cover parts of its surface.
Mercury
Mars
Venus
Earth
takes 225 days to revolve around the sun.
Mercury
Mars
Venus
Earth
Daytime temperatures reach 430 degree Celsius and nighttime is -180 degrees Celsius.
Mercury
Venus
Earth
Mars
revolves around the sun every 88 days.
Mercury
Venus
Earth
Mars
These probes have been able to send back images of sand dunes and ancient lava flows.
Mercury
Venus
Earth
Mars
Dense atmosphere lets very little sunlight penetrate to the surface.
Mercury
Venus
Earth
Mars
The sunlight that does penetrate the clouds cannot escape back into space, this results in a surface temperature of 470 degree Celsius.
Mercury
Venus
Earth
Mars
rotates from east to west
Mercury
Venus
Earth
Mars
Has the greatest daily temperature extremes of any planet.
Mercury
Venus
Earth
Mars
Does not have an atmosphere
Mercury
Venus
Earth
Mars