# Topic 1 Flashcards Preview

## Edexel Physics P1 > Topic 1 > Flashcards

Flashcards in Topic 1 Deck (14)
1
Q

What is the definition of frequency?

A

Is the number of waves passing a point each second

2
Q

What is the frequency measured in?

A

Hertz (Hz). 1 Hz means 1 wave passing per second

3
Q

What is the wavelength?

A

The distance from a point on one wave to the same point on the next wave.

4
Q

What is the wavelength measured in?

A

Metres

5
Q

What is the amplitude?

A

Maximum distance of a point on the wave from its rest position.

6
Q

What is the amplitude measured in?

A

Metres

7
Q

What is the bottom and top of the wave called?

A

The top of the wave is the crest and the bottom is the trough.

8
Q

Wave speed (metres/second, m/s) is

A

Wave speed= distance/time

M/s

9
Q

Wave speed is also linked to the wave frequency and wavelength…

A

Wave speed= frequency x wavelength

M/s= Hz x m

10
Q

Which astronomer created the geocentric model?

A

Ptolemy

11
Q

What is the geocentric model?

A

Ptolemy created the geocentric model, as he thought the Earth was in the centre of everything, with the sun and planets orbiting around it.

12
Q

Who created the heliocentric model?

A

Nicolaus Copernicus

13
Q

What is the heliocentric model?

A

Nicolaus Copernicus suggested that the sun is at the centre of the Solar System, and the Earth and other planets orbit around it.

14
Q

How did Galileo Galilei discover Jupiter’s moons?

A

He utilised the telescope, and plotted the movements of the fours moons and found they orbited around Jupiter and not the Earth. This helped him to support the heliocentric model.