Waves Year 7 Flashcards
Louder sound waves have……………..amplitude
Higher
Quieter sound waves have lower………….
Amplitude
I I I I I I I I I IIIIIIIIIII I I I I I I I I I I I I I I I I IIIIIIIIII I I I I I I I I I I
What kind of wave is this?
A longitudinal wave
Higher sounds have a higher……..
Frequency
Lower sounds have a………………frequency.
Lower
What kind of wave is a sound wave?
Transverse
There are two types of waves, longitudinal and…….
Transverse
👇What is this
🪨())))))))))))))))))))))))))))))))))))))🦇
(((((
(((((((((((
(((((((((((((((
👆This is a reflected wave.
Incident wave
Waves can…….
Reflect
Refract
Diffract
Frequency is number of waves in a………
Second
What is the range of human hearing?
20Hz to 20,000Hz
What is frequency measured in?
Hertz (Hz)
Can you hear in space?
No because there are no particles in space.
Why does hearing deteriorate when you get old.
Because your eardrums are less flexible.
Name two parts of a sound wave.
Crest
Trough
Which is louder?
A ~~~~~~~~~~~~~~~~~~~
B ()()()()()()()()()()()()()()()()()()()()()()()(
B
Which has a higher frequency?
A IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
B I I I I I I I I I I I I I I I I
A
The angle of incidence (for reflection) is equal to the…
Angle of reflection
——————————I——————————
I
I
What is this? ➡️ I
The normal
Name 4 things about a vertical image.
- Upright
- Same size
- Same distance from mirror
- Laterally inverted
Why is a green jumper green?
Because it absorbs all colour but green
What are the primary colours?
Hint-in science, not art
Green
Blue
Red
What are the secondary colours?
Hint - in science, not art
Yellow
Cyan
Magenta
How do you get yellow?
Green and red
Which colour absorbs all colours?
Black
Which colour reflects all colour?
White
A blue coat …… all colour but blue.
Absorbs
A red jumper ……….. red.
Reflects
What can hearing aids do?
Amplify the noise
Send vibrations to the brain
The whole in our eyes is called a….
Pupil
