Day and Night

The video explains the phenomenon of day and night, caused by Earth's rotation on its axis. It describes how different parts of Earth experience varying lengths of daylight throughout the year due to Earth's tilt and orbit. The equator has nearly equal day and night, while the poles experience extreme conditions like polar day and night. The video concludes by prompting viewers to consider the impact of these conditions on living organisms.

What causes the cycle of day and night on Earth?

• The Sun's movement across the sky

• The Earth's orbit around the Sun

• The Earth's rotation on its axis

• The Moon's phases

Why does the Sun appear to move across the sky?

• Because of the Moon's orbit

• Due to the Earth's orbit around the Sun

• Because the Sun is moving

• Due to the Earth's rotation

How does the length of daylight change throughout the year?

• It is longer in winter

• It changes only at the equator

• It changes based on Earth's tilt and orbit

• It remains constant everywhere

What is the phenomenon called when the poles experience 24 hours of daylight?

• Midnight sun

• Solar eclipse

• Equinox

• Polar night

What causes the extreme variations in daylight at the poles?

• The Sun's size

• The Earth's tilt and orbit

• The Earth's distance from the Sun

• The Moon's gravitational pull