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Test: Unit 1

Total questions: 70

Worksheet time: 55mins

Name
Class
Date
1.

The vertical component of a projectile's velocity

a)

is constant

b)

is like the motion for a freely falling object.

c)

can be in only one direction

2.

The horizontal component of motion for a projectile

a)

depends on the acceleration of gravity

b)

depends on the vertical component of motion

c)

is just like the motion of a ball rolling on a horizontal surface without friction.

3.

A vector quantity includes ______, but a scalar quantity includes only magnitude.

a)

time and direction

b)

both magnitude and direction

c)

both magnitude and time

4.

Velocity differs from speed in that velocity includes ______ in its description.

a)

acceleration

b)

direction

c)

time

d)

gravity

5.

Unbalanced forces acting on an object cause the object to ______.

a)

tip over

b)

accelerate

c)

velocity

6.

For a constant force, an increase in the mass ______

a)

will result in an increase in the acceleration

b)

have no effect on acceleration

c)

will result in a decrease in the acceleration

7.

The acceleration produced by a net force on an object is ______

a)

directly proportional to the magnitude of the net force

b)

in the same direction as the net force

c)

inversely proportional to the mass of the object

d)

all of these

8.

The force of friction between two surfaces depends on ______.

a)

the kinds of materials in contact

b)

how much the surfaces are pressed together

c)

both of these

d)

neither of these

9.

All freely falling objects fall with the same acceleration because the net force is only its weight and ______.

a)

the ratio of weight to mass is the same for all objects

b)

the net force is zero

c)

larger objects have more area

10.

The air resistance force on an object depends on ______.

a)

the object's speed and area

b)

the object's speed

c)

the object's area

d)

magic

11.

A wagon has a mass of 50 kg. A net force of 200 N is applied. Its acceleration is ______.

a)

4 m/s*s

b)

4 m/s

c)

10,000 m/s*s

d)

0.25 m/s*s

12.

Energy is the ability to do ______ and cause _________.

a)

Work and cause Change

b)

Change and cause Work

13.

What form of energy caused the bread to bake?

a)

Electrical

b)

Light

c)

Sound

d)

Thermal

14.

Lifting a block gives the block _________________

a)

potential energy

b)

kinetic energy

c)

momentum

d)

masss

15.

Where in the picture would the pendulum have the most kinetic energy?

a)

left

b)

center

c)

right

d)

same everywhere

16.

Where would the pendulum have zero potential energy due to gravity?

a)

left

b)

center

c)

right

d)

it is zero everywhere

17.

How does the amount of work done by lifting a refrigerator onto a truck versus rolling it up a ramp onto the truck?

a)

lifting is more

b)

rolling is more

c)

they are the same

d)

I need to know how heavy the refrigerator is.

18.

What are the two factors that affect the momentum of an object?

a)

speed and velocity

b)

time and mass

c)

distance and displacement

d)

mass and velocity

19.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
20.
Which object has the greatest momentum?
a)
An 18-wheeler tractor trailer at rest.
b)
An average mass person walking.
c)
A sports car driving on the highway.
21.

Momentum is a ____________________ quantity

a)

science

b)

scalar

c)

vector

d)

energy

22.

T/F: A big truck will always have more momentum than a small car.

a)

True

b)

False

23.

A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. The railroad car is brought to a sudden stop while the boxcar moves away from the collision. At what speed will the second boxcar move?

a)

18.6 m/s

b)

9.3 m/s

c)

7.5 m/s

d)

1.86 m/s

24.
If the mass of Earth increased, with no change in radius, your weight would _____.
a)
increase also
b)
stay the same
c)
decrease
25.
Two objects move toward each other gravitationally. As they get closer, the force between them:
a)
remains constant
b)
increases
c)
decreases
26.
If you stood on a ladder so you were twice as far from Earth's center, your weight would be:
a)
one-eighth its normal value
b)
one-quarter its normal value
c)
half its normal value
d)
none of the above
27.

All fluids are:

a)

gases

b)

liquids

c)

gases or liquids

d)

non-metallic

28.

The vessels shown above all contain water to the same height. Rank them according to the pressure exerted by the water on the vessel bottoms, least to greatest.

a)

1,2,3,4

b)

3,4,2,1

c)

4,3,2,1

d)

2,3,4,1

e)

All pressures are the same

29.

Several cans of different sizes and shapes are all filled with the same liquid to the same depth. Then,

a)

The pressure on the bottom of each can is the same

b)

The weight of the liquid on the bottom of each can is the same

c)

The least pressure is at the bottom of the can with the largest bottom area

d)

the force of the liquid on the bottom of each can is the same

30.
Archimedes' Principle states that... 
a)
The buoyant force acting on an object equals the volume of the fluid displaced by the object. 
b)
The buoyant force acting on an object equals the weight (force of gravity) of the fluid displaced by the object.
c)
The buoyant force acting on an object will always be equal. 
31.

According to Archimedes' principle, if a body is immersed partially or fully in a fluid then the buoyancy force is _______ the weight of fluid displaced by the body.

a)

equal to

b)

less than

c)

more than

d)

unpredictable

32.
Which direction does buoyant force always push?
a)
downward
b)
upward
c)
all directions
d)
sponge bob
33.

Due to Bernoulli's principle, the pressure is ............... above an airplane's wing than below it.

a)

Lower

b)

Higher

34.

Bernoulli's principle states that as the velocity of a fluid ______, the pressure exerted by the fluid ______

a)

increases; increases

b)

decreases; decreases

c)

increases; decreases

d)

decreases; increases

35.

Transfer of heat in a gas or liquid by the motion of particles in the heated fluid

a)

conduction

b)

convection

c)

radiation

36.

1200 J of heat are added to a sample of gas while the gas does 400 J of work on the environment. What is the change in internal energy of the gas?

a)

800 J

b)

1600 J

c)

-800 J

d)

-1600 J

37.

Transfer of heat by means of electromagnetic waves

a)

conduction

b)

convection

c)

radiation

38.

Transfer of heat by contact and collisions between the molecules in a substance.

a)

conduction

b)

radiation

c)

convection

39.
Warm air rises and cold air sinks demonstrates what?
a)
conduction
b)
convection
c)
radiation
d)
refrigeration
40.

The average kinetic energy of the atoms or molecules in a substance is directly related to

a)

heat

b)

specific heat capacity

c)

temperature

d)

Brownian Motion

41.

What is heat?

a)

the amount of thermal energy in an object

b)

an object's internal kinetic energy

c)

the transfer of thermal energy from one object to another

d)

the amount of energy needed to raise the temp of an object

42.
In this method of heat transfer heat is carried by a moving medium, like water or air.
a)
Conduction
b)
Convection
c)
Radiation
d)
this is impossible
43.

What happens on a molecular level when heat is removed from an object?

a)

the temperature decreases and the molecules move faster

b)

the temperature increases and the molecules move slower

c)

the temperature increases and the molecules molecules move faster

d)

the temperature decreases and the molecules move slower

44.

As the temperature of an object increases, its molecules

a)

move faster

b)

get samller (condense)

c)

move farther apart (expand)

d)

move faster and farther apart (expand)

45.
The property of a thermometer that allows it to indicate temperature is
a)
thermal expansion
b)
heat capacity
c)
thermal equilibrium
d)
conduction
46.
Charged objects can be attracted to:
a)
Neutral objects 
b)
Objects with the opposite charge
c)
Both
47.
The transfer of what type of atomic particle is responsible for the static charges on objects?
a)
neutrons
b)
protons
c)
electrons
d)
none of these
48.
What types of charges repel?
a)
Positive and Positive
b)
Positive and Neutral
c)
Negative and Neutral
d)
Neutral and Neutral
49.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)
A positive charge.
b)
A negative charge.
c)
A neutral charge
d)
No charge at all
50.
Walking across a carpet is an example of charge being transferred by
a)
friction.
b)
induction.
c)
contact.
d)
static electricity
51.
Which part of the atom is positively charged?
a)
Proton
b)
Neutron
c)
Electron
52.
If an object has a net charge of +2e this means it has
a)
lost 2 electrons
b)
gained 2 electrons
c)
lost 2 protons
d)
gained 2 protons
53.

Two small hollow metal spheres hung on insulating threads attract one another as shown. It is known that a positively charged rod will attract sphere A. Which statements can be correctly concluded about the charge on the spheres?

a)

A has a positive charge

b)

B has a negative charge

c)

A and B have opposite charges

d)

A is neutral

54.

Electric potential ____________ as distance increases.

a)

Increases

b)

Decreases

c)

Remains Constant

d)

Is 0

55.

__________ is stored energy.

a)

Potential Energy

b)

Kinetic Energy

c)

None of the above

d)

All of the above

56.
What is a conductor?
a)
 A material that allows electricity to flow through it.  The circuit is complete. 
b)
A material that does not allow electricity to flow through.  It stops the flow of electricity.
c)
A light switch.
57.

What will happen when the magnets are brought close together?

a)

The magnets will attract

b)

The magnets will not move

c)

The magnets will repel

58.
If you drop or heat up a a magnet, what will eventually happen to it?
a)
the magnet will become stronger
b)
the magnet will demagnetize
59.
The lines on this image are called...
a)
magnetic field lines
b)
iron fillings
c)
graphite lines
d)
none of these
60.
Magnetic poles and electric charges are similar in that...
a)
like poles repel and opposites attract
b)
magnetic force is equal to electric force
61.
Electricity can be used to create a magnet
a)
True
b)
False
62.
A Magnet can be used to create electricity
a)
True
b)
False
63.
What color has the shortest wavelength, or the highest frequency?
a)
yellow
b)
blue
c)
red
d)
violet
64.
What does refraction mean?
a)
bending light
b)
bouncing light
65.
What does reflection mean?
a)
bending light
b)
bouncing light
66.
What is this a picture of?
a)
reflection
b)
refraction
67.

Why does light refract?

a)

speeds up

b)

gets hot

c)

slows down

d)

gains energy

68.
The full spectrum of light energy is called the__________
a)
broad spectrum
b)
electromagnetic spectrum
c)
helium spectrum 
d)
natural light spectrum
69.
Electric and magnetic fields produce
a)
electricity
b)
magnets
c)
longitudinal waves
d)
light
70.
EM waves have the same speed but different:
a)
frequency & medium 
b)
wavelength & frequency
c)
medium & wavelength
d)
color & medium

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