Earth's Rotation and Revolution
Earth is Always Moving
Rotates: It Spins on an Axis (an imaginary tilted line that starts at the north pole, goes through Earth's center, ends at the south pole)
Revolves: It Orbits Around the Sun (takes a circular path around center of the solar system)
What is the imaginary line that starts at the north pole, goes through the center of Earth and exits through the south pole?
What is the circular path of Earth around the sun called?
Means: spins on an axis
Takes: 24 hours, 1 day
Causes: Day and Night
Earth's spin on its invisible axis is called its
How long does it take for Earth to complete one rotation? Select all that are correct.
The rotation of Earth on its tilted axis causes
Day and Night
As Earth rotates, different parts of it face the sun.
Side facing sun - Daytime
Side facing away from sun - Nighttime
As Earth spins on its tilted axis, the part of the Earth that faces the sun has
As Earth spins on its tilted axis, the part that faces away from the sun has
Means: Orbits (circular motion) around an object (sun)
Takes: 365 1/4 Days, 1 Year
Causes: Seasons - Winter, Spring, Summer, Fall/Autumn
Earth's orbit (circular motion) around an object (the sun) is called its
How long does it take for Earth to make one orbit around the sun?
The revolution of Earth around the sun causes
Tilted Axis + Orbit Around Sun = Seasons
Tilt of axis never changes, always points in the same direction
Areas tilted toward the sun get more sunlight and heat (summer)
Areas tilted away from the sun get less sunlight and heat (winter)
What two things contribute to which season happens where?
The part of Earth that is tilted toward the sun will have
The part of Earth that is tilted away from the sun will have