Unit 5: Lessons 3 & 4 Flashcard Review

Front

What causes different seasons on Earth?

Back

The tilt of Earth's axis relative to its orbit around the sun.

Front

Why is December 21/22 the first day of winter in the northern hemisphere?

Back

Because the northern hemisphere is tilted away from the sun.

Front

Why is Leo visible from Earth?

Back

Earth is revolving around the sun, and it is facing Leo.

Front

Why is Polaris not visible from Earth?

Back

Earth is revolving around the sun, and it is on the opposite side from Polaris. The sun is blocking the view.

Front

What lunar phase follows the new moon after 12 days?

Back

waning crescent.

Front

What is the definition of revolution in astronomy?

Back

The movement of one object around another, such as Earth revolving around the sun.

Front

What is the definition of rotation in astronomy?

Back

The spinning of an object around its own axis, such as Earth rotating on its axis.

Front

What is the significance of the Earth's axial tilt?

Back

It affects the intensity and duration of sunlight received at different latitudes, leading to seasons.

Front

What is the equinox?

Back

A time when day and night are of approximately equal length, occurring in spring and autumn.

Front

What is a solstice?

Back

The time when the sun is at its highest or lowest point in the sky at noon, marking the longest and shortest days.