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Physics Y10 > Definitions > Flashcards

Flashcards in Definitions Deck (25):
1

define accerleration

the rate of change of velocity.
how much velocity changes every second.

2

define amplitude

maximum displacement from an undisturbed position.

3

define centre of gravity

point through which an object's weight acts.

4

define charge

a property of electrons and protons.

5

define current

rate of flow of charge.
how much charge flows every second.

6

define displacement

distance from a fixed point.

7

define distance

how far an object has moved.

8

define energy

ability to do something useful.
not created or destroyed but changed from one form to another.

9

define force

a push, pull or twist.

10

define frequency

number of oscillations per second.

11

define gravitational field strength

force on each kilogram due to gravity.

12

define height

vertical displacement.

13

define mass

amount of material in an object.
a massive object is difficult to accelerate.

14

define moment

turning effect of a force.

15

define momentum

mass multiplied by velocity.
conserved in all collisions and explosions.

16

define a period

time taken to make a complete oscillation.

17

define potential difference

energy that each coulomb of charge has.

18

define power

rate that energy is transformed to another form.
number of joules transformed every second.

19

define pressure

force per unit area.

20

define radiation

waves or particles that are emitted from a substance.

21

define radioactivity

ability of a substance to emit waves or particles.

22

define resistance

ability to reduce electrical current.

23

define velocity

speed in a certain direction.

24

define wavelength

distance between one crest and the next crest.

25

define weight

force due to gravity.