Unit 4(Sun-Earth-Moon system)

Front

What is the Sun-Earth-Moon system?

Back

The Sun-Earth-Moon system refers to the gravitational interactions and relationships between the Sun, Earth, and Moon, including their movements and effects on each other.

Front

What causes the seasons on Earth?

Back

The tilt of the Earth's axis (23.5 degrees) and its orbit around the Sun cause the seasons.

Front

What is an equinox?

Back

An equinox is a time when day and night are approximately equal in length, occurring twice a year.

Front

What is a solstice?

Back

A solstice is an event that occurs twice a year when the Sun reaches its highest or lowest point in the sky at noon, resulting in the longest and shortest days.

Front

How does the tilt of the Earth's axis affect climate?

Back

The tilt of the Earth's axis affects the angle of sunlight received, leading to variations in temperature and climate across different seasons.

Front

What is the difference between the Northern and Southern Hemispheres?

Back

The Northern Hemisphere is the half of Earth that is north of the equator, while the Southern Hemisphere is south of the equator. They experience opposite seasons.

Front

What is the role of the Moon in the Earth-Moon system?

Back

The Moon orbits the Earth and affects tides, stabilizes Earth's tilt, and influences various natural phenomena.

Front

What is a lunar cycle?

Back

A lunar cycle is the period it takes for the Moon to go through all its phases, approximately 29.5 days.

Front

What are the phases of the Moon?

Back

The phases of the Moon include new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter, and waning crescent.

Front

What is the significance of the Earth's rotation?

Back

The Earth's rotation on its axis causes day and night, affecting temperature and weather patterns.