semester 1 exam

Question 1

what is a fire blanket used for

Answer 1

put out fire on human

Question 2

tool used to measure volume

Answer 2

graduated cylinder

Question 3

tool used to handle hot things

Answer 3

tongs or gloves

Question 4

units of conversions (King Henry Died By Drinking Chocolate Milk

Answer 4

Kilo Hecto Deka Base Deci Centi Milli

Question 5

measurement of volume

Answer 5

liter

Question 6

measurement for length

Answer 6

meter

Question 7

measurement for mass

Answer 7

gram

Question 8

measurement for temperature

Answer 8

degrees celsius

Question 9

A solid has a _______ shape and a _______ volume

Answer 9

definite, definite

Question 10

A liquid takes the ______ of its container and has a ______ volume

Answer 10

shape, Definite

Question 11

A gas _____ its container and has _____ definite volume

Answer 11

fills, no

Question 12

True or False: particles in matter are always moving

Answer 12

True

Question 13

Waves transfer ______from place to place, and it spreads ______ from the source.

Answer 13

energy, out

Question 14

mechanicall wvae

Answer 14

longitudinal wave that disturbs the medium

Question 15

compression

Answer 15

region of a longitudinal wave where the particles are the closest together; similar to crest on a transverse wave

Question 16

rarefaction

Answer 16

region of a longitudinal wave where the particles are the farthest apart; similar to trough on a transverse wave

Question 17

wave where the particles move perpendicular to the direction which the energy moves

Answer 17

transverse wave

Question 18

wave where the particles move parallel to the direction which energy moves

Answer 18

longitudinal wave

Question 19

longitudinal wavelength can be found by measuring:

Answer 19

compression to compression rarefaction to rarefaction compression to rarefaction

Question 20

transverse wavelength can be found by measuring:

Answer 20

crest to crest trough to trough crest to trough

Question 21

amplitude

Answer 21

measured by distance between midline and crest or midline and trough; shows how much energy the wave carries

Question 22

sound waves travel fastest through…

Answer 22

solid

Question 23

molecule in solid are…

Answer 23

the closest together

Question 24

sound waves travel faster through ______ materials

Answer 24

denser

Question 25

sound waves travel slowest through _____ materials

Answer 25

colder

Question 26

molecules in cold materials move...

Answer 26

slower

Question 27

sound waves travel slowest in\_\_\_\_\_\_ materials

Answer 27

more elastic

Question 28

true or false: particles in elastic materials bounce back quickly

Answer 28

true

Question 29

electromagnetic waves travel fastest through a \_\_\_\_\_

Answer 29

vacuum

Question 30

molecules in a vacuum are the \_\_\_\_\_\_

Answer 30

farthest apart

Question 31

why do you see lightning before you hear thunder

Answer 31

sound travels slower than sound

Question 32

elasticity

Answer 32

ability for the molecules of an object to bounce back or return to its original shape

Question 33

the scale that loudness of a sound wave is measured by

Answer 33

decibel scale

Question 34

main causes of hearing loss

Answer 34

loud noises aging injury/infection

Question 35

what is the main cause of hearing loss for teenagers and young adults

Answer 35

loud music or sounds

Question 36

frequency

Answer 36

measure of how many waves pass in one second

Question 37

hertz

Answer 37

unit frequency is measured in

Question 38

order of the electromagnetic spectrum (longest to shortest wavelength)

Answer 38

radio waves, microwaves, infrared, light rays, ultra violet, x-rays, gamma rays

Question 39

gamma rays

Answer 39

waves that have the highest frequency, and the shortest wavelength

Question 40

radio waves

Answer 40

waves that have the lowest frequency, and the longest wavelength

Question 41

in a vacuum all EM waves have the same

Answer 41

speed

Question 42

how are EM waves drawn

Answer 42

as transverse waves

Question 43

what kind of wave are EM waves

Answer 43

transverse

Question 44

how do the particles of transverse waves move in relation to the energy

Answer 44

perpendicular

Question 45

light rays (visible light)

Answer 45

the only part of the electromagnetic spectrum we can see with the naked eye

Question 46

what causes us to see different colors

Answer 46

the light that is either absorbed or reflected

Question 47

the color black does what

Answer 47

absorbs all of the suns energy

Question 48

Law of reflection

Answer 48

the angle of incidence is the same as the angle of reflection

Question 49

transparent

Answer 49

object where all light can pass through it

Question 50

translucent

Answer 50

object that allows some light to pass through it

Question 51

opaque

Answer 51

object that allows no light pass through it

Question 52

refraction

Answer 52

bending of light as it enters a new medium happens when light slows down as it passes from air into water

Question 53

forms of energy

Answer 53

sound, light

Question 54

force

Answer 54

a push or a pull

Question 55

newtons

Answer 55

SI or metric units for force

Question 56

newton's first law

Answer 56

law of inertia: an object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted on by an outside for

Question 57

newton's second law

Answer 57

force equals mass times acceleration F=ma

Question 58

newton's third law

Answer 58

for every action there is an equal but opposite reaction

Question 59

true or false: unbalanced forces can cause a change in speed or direction

Answer 59

false

Question 60

acceleration due to gravity on a person or object on the surface of a planet is

Answer 60

9.8 meters squared

Question 61

weight

Answer 61

The force of gravity on a person or object's mass calculated mass x gravity

Question 62

difference between speed and velocity

Answer 62

speed is how fast an object is going where velocity is how fast an object is going in a certain direction

Question 63

Joules

Answer 63

unit energy is measured in

Question 64

law of conservation of energy

Answer 64

energy can never be created or destroyed only transformed from one type to another

Question 65

potential energy

Answer 65

energy that is stored or at rest; formula: weight/height

Question 66

kinetic energy

Answer 66

energy of motion