Mass and Weight

Mass and Weight

Concept: Mass is the amount of matter in a body and is constant everywhere. It is measured in kilograms (kg) using a beam balance. Weight is the force with which Earth attracts a body and is measured in newtons (N) using a spring balance. Weight = Mass × Acceleration due to gravity (W = m × g). Mass is scalar, but weight is a vector quantity.

1. What is the SI unit of mass?

kilogram newton gram pound

2. What is the SI unit of weight?

kilogram newton gram litre

3. Which of the following changes when you go to the moon?

Mass Weight Volume Size

4. Which instrument is used to measure mass?

Beam balance Spring balance Thermometer Stopwatch

5. What is the formula to calculate weight?

W = m × g W = m + g W = m / g W = m × v

6. A 5 kg object has what weight on Earth (g = 9.8 m/s²)?

49 N 5 N 98 N 14.8 N

7. Mass is measured using:

Beam balance Spring balance Hydrometer Manometer

8. Weight depends on:

Gravity Volume Temperature Shape

9. Which quantity is vector?

Mass Weight Temperature Length

10. On the moon, your weight is:

Less than on Earth More than on Earth Same as Earth Zero