Explanation

The temperature of the central part of the earth called core

The core is the center of the earth and is made up of two parts:

the liquid outer core and solid inner core.

The outer core is made of nickel, iron, and molten rock.

Temperatures here can reach up to 50,000 C.

ND17-7-2023

Explanation

The value of g at a particular point outside the earth is 10 m/s2.

Explanation

Earth revolves around the sun in 365 days, 5 hours, 59 minutes and 16 seconds.

The time a planet takes to revolve around the sun is called a year.

Explanation

Air temperature: a measure of how hot or cold the air is.

Explanation

Comets are icy bodies that orbit the Sun, and they appear as a long hair-like strand due to their tail of gas and dust.

They consist of three main parts:

1. Nucleus: The central, solid part of the comet.
2. Coma: The cloud of gas and dust surrounding the nucleus.
3. Tail: The long, trailing cloud of gas and dust that follows the comet as it orbits the Sun.

Explanation

Commercial jet aircraft fly in the lower stratosphere to avoid the turbulence which is common in the troposphere below.

The stratosphere is very dry; air there contains little water vapor. 

Explanation

A landslide is defined as the movement of a mass of rock, debris, or earth down a slope

Explanation

Explanation

Johannes Kepler was an astronomer belonged to Germany. 

Explanation

• The nucleus is the solid, central part of a comet, composed of ice and rock.
• It is the source of the comet's activity, including the tail of gas and dust that forms when the comet approaches the Sun.