Class 9 Science Gravitation Quiz

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Questions and Answers

What is the value of acceleration due to gravity on the surface of the Earth?

10.0 m/s²
9.8 m/s² (correct)
8.0 m/s²
9.0 m/s²

What happens to the weight of an object when it is taken to the moon?

It decreases (correct)
It increases
It remains the same
It becomes zero

What is the relationship between the mass of an object and the force of gravity acting on it?

Exponential relationship
No relationship
Directly proportional (correct)
Inversely proportional

Flashcards

Acceleration due to gravity on Earth

The rate at which an object accelerates due to Earth's gravitational pull. It's approximately 9.8 meters per second squared (m/s²).

Weight on the Moon

The weight of an object decreases when taken to the Moon because the Moon's gravity is weaker than Earth's.

Relationship between mass and gravity

The force of gravity acting on an object is directly proportional to its mass. This means that a heavier object experiences a stronger gravitational force.

Study Notes

Gravity and Weight

The acceleration due to gravity on the surface of the Earth is 9.8 m/s².

Weight and Gravity in Different Environments

When an object is taken to the moon, its weight decreases due to the moon's weaker gravitational pull compared to the Earth's.

Mass and Gravity

The force of gravity acting on an object is directly proportional to its mass, but the mass of an object remains constant regardless of its location or gravitational field.