Planets
The 4 inner planets are also known as...
Terrestrial
Heliocentric means what?
Sun-centered
True or False? The sun is made out of rock.
False
One full rotation of the Earth takes how long?
One day or 24 hours
What force keeps the planets in orbit?
a) gravity
b) magnetism
c) sheer willpower
a) gravity
The 4 outer planets are also known as...
Gas Giants
Geocentric means what?
Earth-centered
What phase of the moon is not visible to the naked eye?
New Moon
How long does it take for Earth to completely revolve around the sun?
One year
How do the Earth and the Sun differ?
The surface of the sun is made up of hot gas, while the surface of the Earth is solid rock and liquid water
What is the biggest planet?
Jupiter
Name at least one astronomer who believed the sun was the center of the solar system?
Copernicus or Galileo
Which two phases describe the moon when it is half-illuminated?
First Quarter and Third Quarter
True or False? Parts of Earth are tilted towards the sun during Summer
True
We see a "full moon" when...
a) the moon is between the Earth and the sun
b) the Earth is between the moon and the sun
c) the sun is between the earth and the moon
b) the Earth is between the moon and the sun
What is the order of the planets from the sun?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Name at least one astronomer who believed the Earth was at the center of the solar system
Ptolemy, Aristotle, or Plato
What causes the setting of the sun?
a) Earth revolving around the sun
b) the distance between the Earth and the sun increasing
c) Earth rotating on its axis
c) Earth rotating on its axis
The moon ______ around Earth
a) orbits
b) rotates
c) phases
a) orbits
Planets closer to the sun take a (longer/shorter) time to revolve around the sun compared to planets farther away.
shorter
Which two planets are closest in size?
a) Mercury and Venus
b) Venus and Earth
c) Earth and Mars
b) Venus and Earth
Who constructed one of the first telescopes?
Galileo Galilei
How old is the sun?
4.6 billion years
What is one factor that causes the change of seasons?
The earth revolving around the sun; Earth's axis is tilted
One day on the moon takes about how many Earth days?
One month (29.5 days)