A recent theory attributes the origin of the moon to the impact of a Mars-size body with the Earth. Which of the following is both a true statement and supports the impact theory of the moon's origin?

The scar left by the impact can be identified with the Pacific Ocean

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The composition of the moon is similar to Earth's but somewhat different

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

The moon is older than the earth

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The remains of the impacting body now form the Earth's core

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C The composition of the moon is similar to Earth's but somewhat different
Moon and Earth share similar somewhat similar structure in terms of core, mantle and crust. But, the chemical composition of the crust of the Moon is little bit different than the composition of the Earth's oceanic and continental crust. Owing to the similarities between the two bodies, scientist came up with the giant impact hypothesis, where it is widely believed that Moon initially was a part of the Earth and was formed when Earth and an object of almost same size collided with each other, resulting in fragments thrown out in space, out of which one large fragment happen to form our Moon.

Suggest Corrections

Similar questions

Q. The minimum speed with which a body is projected from the surface of the earth so that it reaches to the surface of the moon is v while the minimum speed with which a body is projected from the surface of the moon so that it reaches to the surface of the earth is v'. Then, disregarding the spinning and orbital motions of the earth and the moon, and using the fact that

\frac{M_{E}}{R_{E}} > \frac{M_{M}}{R_{M}}

where

M_{E}, M_{M}, R_{E}

and

R_{M}

are mass of earth, mass of moon, radius of earth and radius of the moon respectively, we can say that :

Q. The escape velocity of a body from earth is about 11.2 km/s. Assuming the mass and radius of the earth to be about 81 and 4 times the mass and radius of the moon, the escape velocity in km/s from the surface of the moon will be:

Statement 1: Moon is a natural satellite of Earth.

Statement 2: Man-made satellites launched from Earth to orbit around it, are known as artificial satellites. But, moon is a naturally occuring celestial body, which revolves around Earth.

Q. The earth and the moon are attracted to each other by gravitational force. Does the earth attract the moon with a force the moon attracts the earth? Why?

A ball is thrown with same velocity on the surface of earth as well as on the moon. Compare the maximum potential energy attained by the ball on the earth and on the moon. [Assume $g_{e a r t h} = 10 m s^{- 2}$ and $g_{m o o n} = 2 m s^{- 2}$ ]

Join BYJU'S Learning Program