Class 5 SST HOTS Questions - Movements of Earth

Q1: We see the Sun rising in the east and setting in the west. This happens because
(a) The Earth revolves around the Sun.
(b) The Sun revolves around the Earth.
(c) The Earth spins on its axis.
(d) The Sun spins on its axis.
Ans: (c)
The Earth spins on its axis from west to east. This rotation causes the Sun to appear to rise in the east and set in the west for observers on Earth.

Q2: When the North Pole is tilted towards the Sun,
(a) The Northern Hemisphere has summer and the Southern Hemisphere has winter.
(b) The Northern Hemisphere has winter and the Southern Hemisphere has summer.
(c) Both hemispheres have summer.
(d) Both hemispheres have winter.
Ans: (a)
When the North Pole is tilted towards the Sun, it's summer in the Northern Hemisphere because that part of the Earth receives more direct sunlight, while the Southern Hemisphere experiences winter due to less direct sunlight.

Q3: The seasons are caused by the
(a) Rotation of the Earth.
(b) Revolution of the Earth around the Sun.
(c) Rotation of the Sun.
(d) Revolution of the Sun around the Earth.
Ans: (b)
Seasons are caused by the revolution of the Earth around the Sun. The tilt of the Earth's axis as it orbits the Sun leads to variations in the angle and intensity of sunlight, resulting in different seasons.

Q4: You are 10 years old today. You will be 11 after
(a) The Earth completes one rotation on its axis.
(b) The Earth completes one revolution around the Sun.
(c) The Sun completes one revolution around the Sun.
(d) One year – which is not related to the movement of the Earth.
Ans: (b)
You will be 11 years old after the Earth completes one revolution around the Sun, which takes approximately one year. Your age is measured in years based on the Earth's orbit around the Sun.

Q5: Why do the seasons repeat year after year?
Ans: The Earth completes its revolution around the Sun in one year (365 days). The position of Earth repeats in each revolution. So the seasons are repeated every year around the same time.

Q6: In the month of June, it is summer in the Northern Hemisphere and winter in the Southern Hemisphere. Why?
Ans: In the month of June, the North Pole is tilted towards the Sun and the Northern Hemisphere receives more heat. Hence we have summer in the Northern Hemisphere. And in June, the South Pole is away from the Sun. The Southern Hemisphere receives lesser heat. That is why it is winter in the Southern Hemisphere.

Q7: Why is one day and one night on the Earth of 24 hours?
Ans: Because the Earth completes one rotation about its axis in 24 hours.

Q8: What is meant by ‘rotation’ of the Earth? What is the effect of the rotation?
Ans: The spinning motion of the Earth about an imaginary line (axis) is called the rotation of the Earth. The rotation of the Earth causes the days and nights.

Q9: How many different types of motions does the Earth have?
Ans: The Earth has two types of motions.
(i) Rotation on its axis.
(ii) Revolution around the Sun along the orbit.