Definition

Question 1

Ruler

Answer 1

A ruler measures distance in millimetres, centimetres, metres, feet and inches

Question 2

Protractor

Answer 2

Measures angles in degrees

Question 3

Thermometer

Answer 3

Measures heat in degrees Celsius and degrees farenheight.

Question 4

Scales/balance

Answer 4

Measures mass in grams, kilograms, pounds and stones

Question 5

Measuring cylinder

Answer 5

Measures volume in cm3 and litres

Question 6

Stopwatch

Answer 6

Measures time in seconds, minutes and hours

Question 7

Ultrasonic sounds

Answer 7

Ultra sonic sounds are sounds that exist above the human auditory range. So, above 20,000 Hertz(Hz)

Question 8

Infrasonic sounds

Answer 8

Infrasonic sounds are sounds that exist below the human auditory range. So, below 20 Hertz (Hz)

Question 9

Volume

Answer 9

The loudness of a sound

Question 10

Pitch

Answer 10

Hoe high or low a sound is

Question 11

Frequency

Answer 11

The number of vibrations ( or the number of waves) per second

Question 12

Amplitude

Answer 12

The size of vibrations or the distance a particle vibrates when a wave passes. The bigger the amplitude the louder the noise.

Question 13

Wave length

Answer 13

The length of an individual wave,from trough to trough, from peak to peak

Question 14

Transverse waves

Answer 14

Transverse waves are when the particles move at 90 degree angle to the direction that the energy moves in . Examples are light and water waves.

Question 15

Longitudes waves

Answer 15

Longitudes waves are when the particles move in the same direction that the energy moves in. An example is sound waves