Forces can be:
a) pushes only
b) pulls only
c) pushes and pulls
c) pushes and pulls
100
When the forces on an object are balanced, what will the object be doing?
When the forces are balanced, the object will remain still (in it's current state of motion).
100
Give a definition of what gravity is.
The force that attracts a body to the centre of the earth
100
Give a definition of friction
The resistance that one surface or object encounters when moving over another
100
Give a definition of air resistance.
A type of friction caused by air on a moving object
200
What is the unit of force called?
a) the newton, n
b) the newton, N
c) the neutron, A
b) the newton, N
200
When the forces acting on an object are unbalanced, what will the object be doing?
The object's state of matter will change - it may speed up, slow down or change direction.
200
True or false: does gravity hold us on the earth?
True
200
True or false: a bike on grass is a form of friction
True
200
Does the strength of air resistance increase or decrease as the object moves faster?
Increases
300
Which of these is the best way to measure a force?
a) Using a force meter
b) Using a ruler
c) Using a thermometer
a) Using a force meter
300
A book sits on a shelf. Which two forces are acting on it?
a) The shelf pushing down and gravity pushing up
b) The shelf pushing up and air resistance pushing down
c) The shelf pushing up and gravity pushing down
c) The shelf pushing up and gravity pushing down
300
What is the force that acts between any two masses to pull them together?
a) Corn syrup
b) Unbalanced force
c) Gravitational force
c) Gravitational force
300
Which is a form of intentionally decreasing friction?
a) Oil on a squeaky door hinge
b) Wearing studded shoes on a sports field
c) None of the above
a) Oil on a squeaky door hinge
300
Give two scenarios where an object would be experiencing air resistance
Check with Miss Schofield
400
What can we say about forces on an object that is not moving or changing shape?
a) There must only be one force acting on it
b) The forces must be balanced
c) It must be very heavy
b) The forces must be balanced
400
True or false: a sandwich will fall to earth faster than a peanut
False
500
Give two examples of non contact forces and two examples of contact forces.
Check with Miss Schofield
500
Gravity affects the ocean by creating what?
Waves
500
Give an example of how you could increase friction