science quiz

Question 1

what is a force

Answer 1

a push pull or twist measured in newtons

Question 2

identify different types of forces

Answer 2

push, gravitational, electrostatic, magnetic and bouyancy

Question 3

six ways a force can change motion

Answer 3

start, stop, accelerate, decelerate, change, direction and change shape

Question 4

difference between contact and non-contact force

Answer 4

Contact forces are forces that require direct physical contact between two objects

Question 5

is friction is an example of a contact force.

Answer 5

yes

Question 6

friction causes objects to slow down and produces heat and wearing down of the surfaces.

Answer 6

Friction is what causes moving objects to slow down and eventually stop.

Question 7

ways to reduce friction.

Answer 7

lubricants, rollers, reducing mass or smoothing the surfaces in contact

Question 8

identify when friction is useful

Answer 8

can slow things down and stop stationary things from moving

Question 9

Identify whether forces acting upon an object are balanced or unbalanced

Answer 9

sir Isacc newton discovered this