Quiz about Review Forces, Chemical Changes

Question 1

Which has a STRONGER force of gravity, the Earth or the Moon?

Accepted Answer

Earth

Answer

Moon

Question 2

What two things determine the gravity of an object?

Accepted Answer

mass & distance

Answer

mass & weight

Answer

density & mass

Answer

volume & distance

Question 3

When will the forces of gravity between two objects be the GREATEST?

Accepted Answer

when the masses of both objects are large and the objects are close together

Answer

when the masses of both objects are small and the objects are far apart

Answer

when the masses of both objects are small and the objects are close together

Answer

when the masses of both objects are large and the objects are far apart

Question 4

Which model has greater gravitational attraction.

Accepted Answer

Model A

Answer

Model B

Answer

Model A and B have the same amount of gravitational attraction.

Question 5

Rougher surfaces have ...

Accepted Answer

greater friction

Answer

less friction

Answer

the same level of friction

Question 6

Friction is a force that acts in an ___________ direction of movement.

Accepted Answer

opposite

Answer

similar

Answer

parallel

Answer

west

Question 7

There are deep treads on the tyre because they ___________.

Accepted Answer

increase friction

Answer

increase the stopping distance of the car

Answer

reduce the amount of material used

Question 8

Friction produces _____________ to keep ourselves warm or to start a fire.

Accepted Answer

heat

Answer

heart

Answer

helium

Answer

hexagon

Question 9

Magnetism is a force of ____________________________ that occurs between two _____________ objects.

Accepted Answer

attraction or repulsion, magnetic

Answer

external or internal, magnetic

Answer

external or repulsion, electronic

Answer

attraction or internal, electronic

Question 10

The Earth produces its own ________ field.

Accepted Answer

magnetic

Answer

spectrum

Answer

electric

Answer

progressive

Question 11

Every magnet has both a _________ pole and a __________ pole.

Accepted Answer

North, South

Answer

East, West

Answer

Positive, Negative

Answer

Positive, South

Question 12

If two magnets are placed so that a north pole and a south pole are facing each other, they will _____________ each other.

Accepted Answer

attract

Answer

date

Answer

spin

Answer

repel

Question 13

What will happen when these magnets are brought close together?

Accepted Answer

They will repel each other.

Answer

They will attract each other.

Answer

Both magnets will turn to the left

Answer

Both magnets will turn to the right

Question 14

Iron, Nickel and cobalt are all __________________ materials

Accepted Answer

magnetic

Answer

Shiny

Answer

poles

Answer

cold

Question 15

Where is the force of attraction the strongest on a magnet?

Accepted Answer

at the poles

Answer

in the middle

Answer

above the magnet

Answer

below the magnet

Question 16

___________ forces always cause an object's motion to change.

Accepted Answer

unbalanced

Answer

balanced

Answer

contact

Answer

non-contact

Question 17

Applied force is an example of a _________________ force.

Accepted Answer

contact

Answer

non-contact

Answer

balanced

Answer

unbalanced

Question 18

An icy road has less __________ than a dry road.

Accepted Answer

friction

Answer

gravity

Answer

magnetism

Answer

water

Question 19

When the net force is not 0 N, the forces are considered ____________

Accepted Answer

unbalanced

Answer

balanced

Answer

contact

Answer

non-contact

Question 20

Which two characteristics do all forces have?

Accepted Answer

size and direction

Answer

motion and size

Answer

direction and speed

Answer

balance and direction

Question 21

What type of force is this man using to push his grocery cart?

Accepted Answer

Applied Force

Answer

Normal Force

Answer

Gravity

Answer

Air Resistance

Question 22

What is the unit to MEASURE force?

Accepted Answer

Newton

Answer

Kilogram

Answer

Meter

Answer

Pounds

Question 23

A ____________ is a push or a pull on an object.

Accepted Answer

force

Answer

friction

Answer

magnet

Answer

gravity

Question 24

A contact force is from

Accepted Answer

objects physically touching

Answer

far apart objects

Answer

not touching object

Answer

always a pull

Question 25

The three examples pictured are of

Accepted Answer

Contact Forces

Answer

Non-contact Forces

Question 26

The force between the phone and the mount is a

Accepted Answer

non-contact force

Answer

contact force

Question 27

Gravity is a

Accepted Answer

Non-contact Force

Answer

Contact Force

Answer

Myth

Question 28

Friction is a

Accepted Answer

Contact Force

Answer

Myth

Answer

Non-contact Force

Question 29

Which bar magnet will experience the greatest magnetic attraction?

Accepted Answer

Magnet 4

Answer

Magnet 1

Answer

Magnet 2

Answer

Magnet 3

Question 30

What is the phase change from solid to liquid?

Accepted Answer

melting

Answer

condensation

Answer

freezing

Answer

evaporation

Question 31

Is a a rusting bicycle a chemical or physical change?

Accepted Answer

chemcial

Answer

physical

Question 32

Are fireworks exploding a physical or chemical change?

Accepted Answer

chemical

Answer

phyiscal

Question 33

What kind of properties can only be observed when a substance changes into a different substance?

Accepted Answer

chemical properties

Answer

physical properties

Answer

liquid properties

Answer

real properties

Question 34

What forces act on a falling feather?

Accepted Answer

gravity pulling down and friction (air resistance pushing) up

Answer

gravity pushing up and friction (air resistance) pulling down

Question 35

6. An ice cube melts because:

Accepted Answer

c. Heat is being added and the particles begin to vibrate

Answer

a. The ice freezes solid.

Answer

b. The ice dissolves in water

Answer

d. The particles bounce freely

Question 36

On a hot summer day, you make a glass of refreshing sweet iced tea by combining boiling water, tea, sugar, and ice.

What type of change occurs and how do you know?

Accepted Answer

Physical change; sugar dissolves in the tea and water, but the chemical composition remains the same.

Answer

Physical change; sugar dissolves in the tea and water which breaks the bonds of the molecules

Answer

Chemical change; sugar dissolves in the tea and water due to heat being added to the water

Answer

Chemical change; sugar dissolves in the tea and water which breaks the bonds of the molecules

Question 37

What is the first thing you do when performing the scientific method?

Accepted Answer

make an observation

Answer

Make a conclusion

Answer

solve a problem

Answer

experiment

Question 38

Why is it important to collect data?

Accepted Answer

in order to share your results with others

Answer

because

Answer

it gives you busy work

Answer

They are magically delicious

Question 39

An educated guess is

Accepted Answer

hypothesis

Answer

an observation

Answer

question

Answer

experiment

Question 40

This step should be done more than once to ensure accurate results.

Accepted Answer

Conduct an experiment

Answer

conclude

Answer

record data

Answer

clean up after an investigation

Question 41

A student mixes two clear liquids together. After a few minutes, a white powdery solid can be seen settling on the bottom of the test tube. Which of the following is a conclusion that the student can draw based on these observations? The two clear liquids-

Accepted Answer

have gone through a chemical change in which a new substance called a precipitate was produced

Answer

were pure substances before they were mixed

Answer

are toxic and should be handled with extreme caution

Answer

have been stored too long and are no longer good

Question 42

A student places a piece of a potato into a container of hydrogen peroxide. One observation the student makes is that bubbles form around the potato. The presence of bubbles might indicate the formation of a new substance because bubbles -

Accepted Answer

could show that a gas is forming

Answer

always rise to the top of a liquid.

Answer

are almost always perfectly spherical.

Answer

usually burst after a few minutes.

Question 43

Neon is colorless, a poor conductor of heat and is not able to be stretched. How would it be classified?

Accepted Answer

Nonmetal

Answer

Metalloid

Answer

Metal

Answer

None of the above

Question 44

Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon?

Accepted Answer

Metalloid

Answer

Metal

Answer

Nonmetal

Answer

Pretty

Question 45

Luster is ___________

Accepted Answer

A.  the way light is reflected off a surface.

Answer

A.  how well a piece of matter conducts electricity.

Answer

A.  the capability of being drawn out into thin wires or threads.

Answer

A.  the capability of being hammered out thin.

Question 46

A mixture in which we cannot see all the individual parts is called a...

Accepted Answer

Homogeneous mixture

Answer

Pure substance

Answer

Heterogeneous mixture

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