Vocabulary
The amount of matter in an object.
Mass
Mass changes as the force of gravity changes.
False. Mass is not influenced by gravity, and therefore does not change.
What is weight?
The force of attraction on an object caused by gravity.
Floating in space for a period of time is not harmful to the human body.
False. Astronauts often experience health problems due to weightlessness for a period of time.
What is weightlessness?
1 ton is lighter to lift in zero gravity.
True. 1 ton is lighter to lift off from the ground because you don't have to fight off gravity pulling it down. However, it still has a mass of 1000kg.
What unit do we measure weight in? What is the abbreviation for it?
Newtons (N)
Mars has a smaller mass than Earth. Therefore, the force of gravity is weaker and we would weigh less on Mars.
True. The smaller the mass, the less force of gravity. Mars as a weaker gravitational force than Earth so we would weigh less on Mars.
The tool that is used to measure the weight of an object.
Forcemeter
Our weight is slightly lower on an airplane than on the ground.
True. The further we are from the centre of the Earth, the weaker the gravitational force becomes, so our weight would be very slightly lighter on an airplane than on the ground.