Physics Flashcards
1
Q
what word is used for the number of waves passing a point each second?
A
Frequency
2
Q
Which electromagnetic waves are ionising?
A
Gamma,xray,ultraviolet
3
Q
What phrase is used for the ‘distance a vehicle travels under the braking force’
A
Braking distance
4
Q
The steeper the line on a distance-time graph….
A
the quicker the speed
5
Q
State two uses of microwaves
A
Satellite communications, heating food
6
Q
Units of mass
A
Kilograms (kg)
7
Q
unit of force
A
Newtons or N
8
Q
What is a vector quantity
A
a quantity with magnitude and direction
9
Q
what is a scalar quantity
A
a quantity with only magnitude
10
Q
what type of waves are sound waves travelling through the air?
A
longitudinal waves
11
Q
what word means ‘rate of change of velocity?
A
acceleration
