How are Weight and Mass Different?

An astronaut landing on the moon experiences the effect gravity. This force is less than when she is on the Earth. Compared with being on Earth, how do her mass and her weight change when she is on the moon?

• Mass is changed, weight is changed

• Mass is unchanged, weight is unchanged

• Mass is unchanged, weight is less

• Mass is unchanged, weight is more

The correct units for mass and weight in this order are:

• kg, grams

• mass, kg

• Force, newtons

• kilogram, Newton

• 8.0 kg

• 8.0 Netwons

• 5.0 kg

• 5.0 Newtons

Which statement about mass or weight is correct?

• Mass is a force.

• Mass is measured in newtons.

• Weight is a force.

• Weight is measured in kilograms.

What is the weight of an object?

• the force that is experienced by the object caused by gravity

• How much matter in an object

• how much volume an object takes up

• the mass of the object

Which instrument is used measure the mass of objects?

• spring balance

• thermometer

• stop watch

• ruler

• colour

• temperature

• volume

• mass

The mass of an astronaut is 70 kg on the Moon. What is the mass of the astronaut on the Earth? The gravity on Earth is 9.8 m/s2 and the gravity on the moon is 1.6 m/s2

• 7kg

• 70kg

• 686 Newtons

• 112 Newtons

A 1 kg rock sample of aluminium ore and a 1kg sample of iron ore is bring transported on a rocket ship travelling back from Mars to Earth. Which measured quantity must these two samples always have in common when travelling back to Earth on the rocket ship?

• the same colour

• the same temperature

• the same weight

• the same amount of matter

This question relates to an experiment you did in Term 2 in the Science lab.

• They have the same mass and the same volume but different weights.

• They have the same mass and the same weight but different volumes.

• They have the same mass, the same volume and the same weight.

• They have the same weight and the same volume but different masses.