Physics

Question 1

What is a wave

Answer 1

A movement of energy

Question 2

How is energy transferred

Answer 2

WAVES
Heating
Forces
Electrical current

Question 3

What is sound caused by

Answer 3

Vibrations

Question 4

What do vibrations travel through

Answer 4

Medium

Question 5

What is a medium

Answer 5

Contains particles

Question 6

How is sound caused

Answer 6

The vibration of an object and particles, which creates sound waves, energy is transferred during this process and can only work by vibrations in a medium

Question 7

What sort of wave is sound

Answer 7

Longitudinal wave

Question 8

Which direction does a longitudinal wave energy travel

Answer 8

Energy transfer is parallel to the direction the wave travels

Question 9

What is a wave made of

Answer 9

Compression

Rarefaction

Question 10

What is a light wave

Answer 10

Transverse wave

Question 11

What direction does energy transfer happen in a light

Answer 11

Energy transfer is perpendicular to the direction the wave travels

Question 12

What is an echo

Answer 12

A hard reflected sound wave

Question 13

Which surface will create an echo

Answer 13

A smooth, hard and flat surface

Question 14

Which surface absorbs sound

Answer 14

Rough surface

Question 15

What happens when a wave is absorbed

Answer 15

It absorbs energy transferred into it and the tempature of the substance increases

Question 16

Speed of sound

Answer 16

Distance=speed/time

Question 17

Sound will travel the fasyesy through…

Answer 17

A solid because the particles physically touch and vibrations can be passed from particle to particle easier

Question 18

Why can’t sound travel through a vacuum

Answer 18

There are no particles to vibrate and pass on the energy

Question 19

Who is echolocation used by

Answer 19

Dolphins, bats and submarines

Question 20

What is frequency

Answer 20

Frequency is the pitch of a sound

Question 21

Sound more waves mean a…

Answer 21

Higher pitch frequency

Question 22

What is frequency measured in

Answer 22

Hertz

Question 23

What is pitch affected by

Answer 23

The speed of vibrations

Question 24

What is volume determined by

Answer 24

The amplitude of a wave and the size and energy of the vibrations

Question 25

What is volumes determined in

Answer 25

Decibels (dB)

Question 26

What is amplitude

Answer 26

The distance of particles that are displaced by vibrations

Question 27

How does amplitude happen

Answer 27

The more vibration, the more energy created in the particles and then the particles are displaced by vibration creating a louder sound

Question 28

How quick to light waves travel

Answer 28

300000000

Question 29

What pattern are the waves for light waves

Answer 29

Straight lines

Question 30

What is light measured in

Answer 30

Lux

Question 31

Angle of reflection and angle of incidence…

Answer 31

Are the SAME

Question 32

Which objects reflect light the best

Answer 32

Smooth shiny surfaces Pale colours Clear images as they reflect light regularly

Question 33

Objects that do not reflect light well

Answer 33

Rough Matt surfaces Dark colours Give no or diffuse images

Question 34

What is refraction

Answer 34

When light bends

Question 35

Why does it happen

Answer 35

The light CHanges speed

Question 36

What happens when light enters a more dense medium

Answer 36

It bends away from the normal

Question 37

What does tagaga stand for

Answer 37

Towards air glass away glass air

Question 38

What is the electromagnetic spectrum

Answer 38

Radio microwave infrared visible light untravidet X-ray gamma ray

Question 39

What is a prism

Answer 39

It splits a ray of white light into a spectrum of colours, known as dispersion

Question 40

Wavelength in colour

Answer 40

Each colour has a slightly different wavelength, red has longest wavelength and refracted least

Question 41

How are colours made

Answer 41

By mixing other colours of light

Question 42

What are the 3 primary colours

Answer 42

Blue red and green

Question 43

How is black made

Answer 43

Absorbs all wavelengths of light

Question 44

How is white made

Answer 44

Object will absorb no colour and therefore all of the light