RETAKE Unit 4. Motion of Earth, Moon and Sun (21-22)

Front

What would a three-hour exposure photograph of stars in the northern sky look like if the Earth did NOT rotate?

Back

The stars would appear as straight lines instead of trails, indicating no movement.

Front

What latitude line receives direct sunlight on the summer solstice?

Back

Tropic of Cancer, 23.5°N.

Front

Why does the moon's gravity have a greater effect on Earth's tides than the Sun's?

Back

The moon is closer to Earth than the Sun.

Front

What latitude line receives direct sunlight on the winter solstice?

Back

Tropic of Capricorn, 23.5°S.

Front

What is the apparent path of the Sun at the Equator throughout the year?

Back

The Sun appears to move in a straight line across the sky, rising in the east and setting in the west.

Front

Define rotation in the context of Earth.

Back

Rotation is the spinning of Earth on its axis, which takes approximately 24 hours.

Front

What is revolution in relation to Earth?

Back

Revolution is the movement of Earth around the Sun, taking about 365.25 days to complete one orbit.

Front

Explain the concept of the equinox.

Back

An equinox occurs when day and night are approximately equal in length, happening in March and September.

Front

What causes the seasons on Earth?

Back

Seasons are caused by the tilt of Earth's axis and its revolution around the Sun.

Front

What is the significance of the Tropic of Cancer?

Back

It is the northernmost point where the Sun can be directly overhead at noon during the summer solstice.