Planets Rotation/Revolution
How long does it take Earth to rotate once on its axis?
24 hours or 1 day
How long does it take for the earth to revolve around the sun?
365 days or a 1 year.
Axis
An imaginary line that passes through a planet's center and its north and south poles, about which the planet rotates.
asteroid belt
Between Mars and Jupiter
Geocentric
Earth centered, Aristotle - first, Ptolemy
Revolution
Earth's movement around the sun.
What causes day and night on Earth?
Earth's rotation on its axis
Hemisphere
Hemi= half.
Equator
Imaginary line that divides the earth into 2 hemispheres.
outer planets
Jupiter, Saturn, Uranus, & Neptune. Called Gas Giants.
Gas giants (Jovian)
Jupiter, Saturn, Uranus, Neptune
4th planet from the sun
Mars
inner planets
Planets closest to the Sun- Mercury, Venus, Earth, Mars
What does the sun do for Earth?
Provides heat, light, and energy
6th planet from the sun
Saturn
Revolution
The movement of an object around another object
Rotation
The spinning motion of a planet on its axis.
Rotation
The spinning of Earth on its axis
sun
The star at the center of our solar system
What causes the seasons on Earth?
The tilt of the Earth's axis
My Very Excellent Mother Amy Just Served Us Nachos
Used to remember the names of the planets in order from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
2nd planet from the sun
Venus
Which direction does the earth rotate?
West to east.
Heliocentric
sun-centered (Copernicus), Galileo improved telescope
asteroid belt
the region of the solar system between the orbits of Mars and Jupiter, where many asteroids are found
