Earth's Rotation & Tilt
The Earth spins on its...
Axis
Gravity is considered a...
Force
Shadows are a result of...
An object blocking the sun's rays.
What is Earth's orbit?
Earth's circular pattern of movement around the sun.
The sun is a...
Star
How long does it take for Earth to make a full rotation?
24 hours
Does the moon have more or less gravitational attraction to us than the Earth?
Less
If it's 6am, what direction will the shadow be on? East or West?
West
How long does it take Earth to make a full revolution around the sun?
365.25 days or (1 year)
The sun is the _______________ star to Earth.
Closest
As a result of Earth's rotation, we experience both....
Day and Night
The amount of gravitational pull an object has on another depends on...
Size and distance
Will a shadow at 1 p.m. or 5 p.m. be longer?
5 p.m.
How do we account for the 1/4 of a day extra for Earth's orbit?
Every 4 years, February has an extra day (Leap Year)!
How long does it take light from the sun to reach Earth?
About 8 minutes.
Earth's tilt creates...
seasons
What causes tides?
The moon's gravitational force on the oceans.
What direction will the shadow be at 3pm? East or West?
East
Because Earth is tilted, when it's winter, what happens to the Arctic?
It is dark almost all day.
When we observe stars in the sky, why do they appear so tiny?
Because they are so far away, their apparent brightness is dim.
How many degrees is Earth tilted?
23.5 degrees
Who discovered the formula for gravity?
Sir Isaac Newton
What instrument for telling time uses shadows?
A sundial.
What shape is Earth's Orbit?
Ellipse, or oval
What three forms of light are emitted by the sun?
Visible light, infrared radiation (heat), and ultraviolet radiation.