physical science year end review 2021

Question 1

This type of electricity refers to electrons piled up ready to discharge

Accepted Answer

static

Question 2

The procedure often used to answer a science question is the scientific marvel

Accepted Answer

False

Question 3

Your TV remote uses this type of wave

Accepted Answer

infrared

Question 4

A meter is longer than a yard

Accepted Answer

True

Question 5

An element that gains or loses electrons and becomes charged is called an ion

Accepted Answer

True

Question 6

What device opens and closes a circuit

Accepted Answer

switch

Question 7

A Bible could roughly be compared to a

Accepted Answer

kilogram

Question 8

Wet cells are often used in vehicles

Accepted Answer

True

Question 9

Ferrofluid is

Accepted Answer

magnetic liquid

Question 10

Like poles of a magnet

Accepted Answer

repel

Question 11

How many watts are used in a 12 volt circuit with 3 amps

Accepted Answer

36

Question 12

The word "science" means the search for

Accepted Answer

knowledge

Question 13

A device that changes mechanical energy into electrical

Accepted Answer

generator

Question 14

There are four states of matter

Accepted Answer

True

Question 15

The speed of sound in air a about

Accepted Answer

300 meters / sec

Question 16

The circuits most often used in your home are called

Accepted Answer

parallel

Question 17

Another name for ultraviolet light

Accepted Answer

black light

Question 18

The term "viscosity" refers to

Accepted Answer

the flow of a liquid

Question 19

Cartesian divers displayed which principle(s)

Accepted Answer

both b & c

Question 20

The "push" in a circuit is measured in...

Accepted Answer

volts

Question 21

The longest wavelength the EM spectrum belongs to

Accepted Answer

radio waves

Question 22

A natural magnetic mineral is called lodestone

Accepted Answer

True

Question 23

To make an electromagnet you need

Accepted Answer

both a & b

Question 24

A nanometer is smaller than a meter

Accepted Answer

True

Question 25

The formula for finding density is

Accepted Answer

D = M / V

Question 26

A balance is used to find

Accepted Answer

mass

Question 27

If something changes state it may have had energy...

Accepted Answer

both a & b

Question 28

The element oxygen has 8....

Accepted Answer

both A & B

Question 29

The best definition for a hypothesis is

Accepted Answer

an educated guess

Question 30

Sound that bounces off an object and returns to your ear is called

Accepted Answer

an echo

Question 31

Paper money is magnetic

Accepted Answer

True

Question 32

The length of a meter is based on the distance from Paris to Rome

Accepted Answer

False

Question 33

To find "pressure" you take force and divide it by area

Accepted Answer

True

Question 34

Sound cannot travel if there's no medium to travel through

Accepted Answer

True

Question 35

Human's can hear frequencies as high as

Accepted Answer

20,000 hertz

Question 36

When matter changes into another form it is a physical change

Accepted Answer

False

Question 37

Magnets are often named for their

Accepted Answer

shape

Question 38

When a police siren passes you you'll probably experience

Accepted Answer

the doppler effect

Question 39

The letters SI stand for

Accepted Answer

System International

Question 40

Minerals that easily become magnetized include

Accepted Answer

all of these

Question 41

The familiar AA battery is technically not a battery

Accepted Answer

True

Question 42

85 decibels is an example of sound's

Accepted Answer

amplitude

Question 43

The "A" in AM stands for amplitude

Accepted Answer

True

Question 44

To make "goop" you mix glue with...

Accepted Answer

both a or b

Question 45

The highness or lowness of sound is called its

Accepted Answer

frequency

Question 46

An example of a molecule would be

Accepted Answer

NaCl

physical science year end review 2021

Questions 46

physical science year end review 2021

Questions 46