Which statements are correct about force?
1, 3, and 4
The object shown by the picture is _______, it is used to measure _______ .
balance scale, mass
Airplanes and birds have streamlined shape that is useful to _________ .
reduce air resistance
Which person will land on the ground first?
A person with parachute 2
Mention two problems caused by friction!
Wear and tear, difficult to move things
An object will have different weight on Earth and on the Moon. Why?
Weight is affected by gravity. The Earth and the Moon have different amount of gravity.
Name force 1 and force 2 based on the picture!
1: air resistance, 2: friction
The flowing water in the picture is an example of _______ force.
gravity
When the unlike poles of magnet are facing each other, they will _____ .
attract
