Earth's Seasons and Rotational Dynamics

The video explains the concepts of Earth's rotation and revolution. Earth's rotation on its axis causes day and night, while its revolution around the Sun leads to the changing seasons. The Earth's axis is tilted, which results in different parts of the planet receiving varying amounts of sunlight throughout the year. A demonstration using a globe and a lamp illustrates these movements, showing how the Earth's motion affects our perception of the Sun's movement in the sky.

What causes the cycle of day and night on Earth?

• The Earth rotating on its axis

• The Earth revolving around the Sun

• The tilt of Earth's axis

• The Sun moving around the Earth

How long does it take for the Earth to complete one full revolution around the Sun?

• 24 hours

• 12 months

• 30 days

• 365 days

What is the main reason for the different seasons on Earth?

• The speed of Earth's rotation

• The distance of Earth from the Sun

• The shape of Earth's orbit

• The tilt of Earth's axis

During which season does the northern hemisphere lean towards the Sun?

• Autumn

• Winter

• Spring

• Summer

What would happen if Earth's axis were not tilted?

• There would be no day and night

• The Earth would stop rotating

• The Earth would not revolve around the Sun

• We would experience the same season all year

In the demonstration, what does the lamp represent?

• The Moon

• A star

• The Earth

• The Sun

What does the globe represent in the demonstration?

• The Sun

• The Earth

• The Moon

• A planet

How many rotations does the Earth complete in one year?

• 24

• 12

• 365

• 30

What is the main cause of the apparent motion of the Sun in the sky?

• The tilt of Earth's axis

• The Earth's rotation and revolution

• The Sun moving around the Earth

• The Earth's distance from the Sun

How many other planets revolve around the Sun along with Earth?

• Seven

• Six

• Five

• Eight