science😡

Question 1

what is a wave?

Answer 1

A travelling disturbance

Question 2

what is sir Issac newtons definition of science

Answer 2

looking at the ordinary and seeing the extraordinary

Question 3

what is energy

Answer 3

the ability to do work: to cause a change

Question 4

what is the high point of a wave called?

Answer 4

crest

Question 5

what is the lowest point of a wave called?

Answer 5

trough

Question 6

what is a wave length?

Answer 6

crest to crest or trough to trough

Question 7

what is amplitude?

Answer 7

rest to crest or trough to rest

Question 8

what is sound?

Answer 8

The energy from a vibrating object that travels through a medium.

Question 9

what is a sound wave

Answer 9

a chain of vibrating molecules

Question 10

what do waves not carry?

Answer 10

matter

Question 11

what do waves carry?

Answer 11

energy

Question 12

what is a medium

Answer 12

anything with atoms

Question 13

what is a transverse wave

Answer 13

particles vibrating at right angles in the direction the wave is traveling in.

Question 14

why does sound travel faster through a solid

Answer 14

because the atoms are closely packed together in a solid

Question 15

what is sound the movement of

Answer 15

a vibrating object

Question 16

what 2 variables affect sound

Answer 16

medium and temperature

Question 17

what do sound waves require

Answer 17

medium

Question 18

what dont electromagnetic waves require

Answer 18

a medium (but they CAN travel through a medium)

Question 19

what are 4 catergories of waves

Answer 19

sound, water, heat and light

Question 20

what are examples of mechanical energy

Answer 20

throwing a baseball, turning a key, turning a turbine, turning a windmill

Question 21

whats the formula for mechanical energy

Answer 21

P.E + K.E

Question 22

what will playing a violin do to the air around it

Answer 22

make the air particles vibrate making them comprise and refract

Question 23

whats a rarefaction

Answer 23

the parts of a wave that are more spread apart

Question 24

whats a compresion

Answer 24

the part of a wave that are closely packed

Question 25

what are some examples of chemical energy

Answer 25

biomass, batteries, photosynthesis, fossil fuel, coal,

Question 26

how fast will sound travel in room temperature

Answer 26

768 mph

Question 27

why does sound travel faster through a solid?

Answer 27

because their are more molecules in a solid

Question 28

what doe angle of incidents equal

Answer 28

angle of reflection

Question 29

angle of incidence (into mirror) =
Example - 90 degrees

Answer 29

angle reflected back

Question 30

whats diffraction?

Answer 30

sound travelling around or through a barrier

Question 31

whats refraction?

Answer 31

bending of sound and light due to the change in soundings.

Question 32

what does boredom have to do with science?

Answer 32

boredom creates curiosity which creates questions

Question 33

1 wave per second is called

Answer 33

hertz

Question 34

At room temperature, about how fast does sound travel?

Answer 34

768 mph

Question 35

What is the difference between reflection and refraction?

Answer 35

In refraction the light gets bent when it reaches a different medium, while in a reflection it bounces off when it reaches another medium.

Question 36

What were the energy conversions in the water balloon slingshot?

Answer 36

There is mechanical energy in the water balloon slingshot. When the balloon was in the pouch it was potential energy, but when it was released and soaring in the air it was converted into kinetic energy.

Question 37

What are the key traits of a sound wave?

Answer 37

Sound waves travel at a right angle up and down in the direction the wave is traveling.

Question 38

What is the law of reflection?

Answer 38

The angle of incidence (in) = the angle of reflection (out)

Question 39

energy conversions with water balloons?

Answer 39

hee hee

Question 40

whats reflection

Answer 40

bouncing off