Day and Night

In which direction does the sun appear to move across the sky?

East to West.

Which way does the earth spin?

In an anti-clockwise direction when viewed from the North Pole.

Where is the Sun in sky later in the afternoon

Sun is low in the sky in the west. Long shadows point away from the Sun.

How long does it take the Earth to make one complete rotation?

24 hrs

How long does it take the Earth to revolve around the Sun?

365 days.

Equator

A made-up line that circles the Earth halfway between the North and South Poles.

Axis

An imaginary line through the center of an object. The Earth spins on this imaginary line. As the Earth moves, its axis is tilted.

What Causes Day and Night?

Earth turns. This makes the Sun's place in the sky change during the day. As Earth turns, the Sun appears to go up and move across the sky, and then go back down.

When is it Summer/ Winter in the Northern Hemisphere

In June it is tilted toward the Sun. It gets a lot of light, so it is summer. In December it is tilted away from the Sun. It doesn't get a lot of light, so it is winter.

When is it Summer/ Winter in the Southern Hemisphere

In June it is tilted toward the Sun. It gets a lot of light, so it is summer. In December it is tilted away from the Sun. It doesn't get a lot of light, so it is winter.

Season

One of the four parts of the year - spring, summer, fall and winter. The tilt of the Earth's axis makes the seasons change.

Where is the Sun in the sky at noon

Sun is high in the sky, straight overhead. Shadows are short.

Where is the Sun in sky in the early morning

Sun is low in the sky in the east. Long shadows point away from the Sun.

What are the two factors that cause seasons to change?

The Earth's tilt and revolution.

Does the Sun or Earth's rotation cause day and night?

The earth rotates on its axis causing day and night.

Northern Hemisphere

The half of the Earth that is closer to the North Pole. In June it is tilted toward the Sun. It gets a lot of light, so it is summer. In December it is tilted away from the Sun. It doesn't get a lot of light, so it is winter.

Southern Hemisphere

The half of the Earth that is closer to the South Pole.

What is orbiting?

To travel around another object.

Rotate

To turn on an axis.