Science Lottie.

Question 1

What’s an amplitude?

Answer 1

The maximum distance moved by a point on a vibrating wave measured.

Question 2

What’s the crest?

Answer 2

The top of each wave.

Question 3

What’s a trough?

Answer 3

The bottom of a wave.

Question 4

What’s the wave length?

Answer 4

The distance between crests of each 2 waves.

Question 5

What are the 2 different types of waves with “fra” in the name?

Answer 5

Diffraction and refraction.

Question 6

what symbol does a diffraction wave make when it goes through a tight space?

Answer 6

A Wi-Fi symbol.

Question 7

What’s the type of wave that acts as a mirror?

Answer 7

Reflection.

Question 8

What is the incident wave?

Answer 8

An incident wave is a current wave that travels through a transmission line.

Question 9

True or false, is a lower frequency a more spaced out wave?

Answer 9

True.

Question 10

When you get older you start to lose a hearing of high pitch noises, why is that?

Answer 10

Because your eardrums get less flexible, making them stiffer, which then leads to them moving slower only hearing mid and low pitch noises.

Question 11

What is a frequency?

Answer 11

The number of waves per second.

Question 12

What do we measure waves in?

Answer 12

Hertz/ Hz

Question 13

What does soluble mean?

Answer 13

That something can dissolve.

Question 14

What does insoluble mean?

Answer 14

That something doesn’t dissolve.

Question 15

What does solvent mean?

Answer 15

What something dissolves in.

Question 16

How do we see colour?

Answer 16

The human eye and brain together translate light into colour. Light receptors within the eye transmit messages to the brain, which produces the familiar sensations of colour. Newton observed that colour is not inherent in objects. Rather, the surface of an object reflects some colours and absorbs all the others.

Question 17

What are the primary colours in light?

Answer 17

Green, Blue and red.

Question 18

What are the secondary colours in light?

Answer 18

Cyan, Magenta and yellow.

Question 19

What is sound?

Answer 19

Sound is a type of energy made by vibrations. When an object vibrates, it causes movement in surrounding air molecules. These molecules bump into the molecules close to them, causing them to vibrate as well.

Question 20

What do ultrasounds do?

Answer 20

An ultrasound scan, sometimes called a sonogram, is a procedure that uses high-frequency sound waves to create an image of part of the inside of the body. An ultrasound scan can be used to monitor an unborn baby, diagnose a condition, or guide a surgeon during certain procedures.

Question 21

What’s the difference between light and sound waves?

Answer 21

Light waves are electromagnetic waves while sound waves are mechanical waves. Light waves are transverse while sound waves are longitudinal. Light waves can travel in vacuum. Sound waves require a material medium to travel, and hence, cannot travel in vacuum.

Question 22

What’s exothermic?

Answer 22

When energy goes out but temperature goes in.

Question 23

What’s endothermic?

Answer 23

When energy goes in but the temperature goes out.