Question

Fill in the blanks with the correct words.
1. .................... (Gravitational/Electrostatic) force makes the Earth move around the sun and also makes the moon go around the Earth.
2. Atmospheric pressure is measured using an instrument called the .................... (barometer/biometer).
3. Objects that produce sound are called .................... (voice/sonorous).
4. Burning of fossil fuels like coal and petroleum in thermal power plants releases .................... (carbon dioxide/sulphur dioxide) and nitrogen.
5. The distance travelled by light in one year is called a .................... (satellite/light year).

Answer 1

1. Gravitational force makes the Earth move around the sun and also makes the moon go around the Earth.

2. Atmospheric pressure is measured using an instrument called the barometer.

3. Objects that produce sound are called sonorous.

4. Burning of fossil fuels like coal and petroleum in thermal power plants releases sulphur dioxide and nitrogen.

5. The distance travelled by light in one year is called a light year.