Test: Earth & its Natural Satellites - 1 - Class 5 MCQ

The Earth is the third planet in the solar system.

The moon is a natural satellite of the Earth.

An artificial satellite is a human-made spacecraft that is designed to orbit around the Earth. It is not a natural object like the moon, which is a natural satellite of the Earth.

• The Earth is composed of several layers, with the crust being the outermost layer.
• The crust is relatively thin compared to the other layers, consisting mainly of solid rocks.
• It forms the land we walk on and the ocean floors.
• Two types of crust exist: continental crust (land) and oceanic crust (under oceans).
• This layer plays a crucial role in supporting life and geological processes.

The moon is made of rocks.

Aryabhata was India's first satellite, launched in 1975. Bhaskara, Rohini, INSAT-2A, and CARTOSAT are some of the other Indian satellites.

Communication satellites are used to send telephone conversations and television programmes around the world. For example, the GSAT-15 is a communication satellite launched by India on 11 November 2015.

The thickness of the crust varies from 5 km under the ocean floor to 70 km under the continents.

The diameter of the moon is about 3500 km.

The moon appears to change its shape every day due to its phases, which occur as it orbits around the Earth.

This changing position affects how much sunlight reflects off the moon's surface, giving it the appearance of different shapes, like a crescent or a full moon.