Ear | MCQs

Explanation

• The Sun is approximately 330,000 times more massive than the Earth.
• It means it has a mass of about 1.989 x 10^30 kilograms.
• The Earth has a mass of about 5.972 x 10^24 kilograms.

Explanation

• The Sun is approximately 109 times larger than the Earth in terms of diameter.
• The Sun's diameter is about 1,392,684 kilometers (865,374 miles).
• The Earth's diameter is about 12,742 kilometers (7,918 miles).
• So, if you were to line up 109 Earths side by side, they would roughly equal the diameter of the Sun.

Explanation

• When Earth is between the Moon and the Sun.
• It blocks the sunlight from reaching the Moon, casting a shadow on the Moon.
• This is known as a Lunar Eclipse.

Explanation

• The Earth takes approximately 23 hours, 56 minutes, and 4 seconds to complete one rotation on its axis, which is called a sidereal day.
• This is the time it takes for the Earth to rotate once relative to the fixed stars.
• The extra 4 minutes is due to the Earth's slightly ellipsoidal shape and the effects of the Moon's gravitational pull.

Explanation

The sun rises in the East and sets in the West.

which means that the Earth is rotating from West to East. 

Earth revolves in orbit around the Sun in 365 days, 6 hours, 9 minutes.

with reference to the stars, at a speed ranging from 29.29 to 30.29 km/s.

The 6 hours, 9 minutes add up to about an extra day every fourth year,

which is designated a leap year, with the extra day added as February 29th.

Explanation

• The Earth rotates constantly from West to East.
• Which is why the Sun appears to rise in the East and set in the West.
• This rotation is also the reason why we experience day and night in a 24-hour cycle.

Explanation

When the half of the Earth is facing away from the Sun, it experiences Night, as it is not receiving direct sunlight.

Explanation

• When the half of the Earth is facing the Sun, it experiences Day, as the Sun's light illuminates that region.
• The other half of the Earth, facing away from the Sun, experiences Night.

Explanation

• The Earth's axis is an imaginary line that runs through the North Pole and the South Pole, around which the Earth rotates.
• It is an imaginary reference point, not a physical object or shape.

Explanation

• The orbit of the Earth around the Sun is an ellipse, meaning that it is an elongated circle, with the Sun located at one of the two foci (plural of focus) of the ellipse.
• This means that the distance between the Earth and the Sun varies throughout the year.
• With the closest point (perihelion) occurring around early January.
• With the farthest point (aphelion) occurring around early July.