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Conceptual Physics Sem.2 Final Review

Total questions: 67

Worksheet time: 1hrs 22mins

Name
Class
Date
1.

If a loaf of bread is compressed, its

a)

density decreases.

b)

density increases.

c)

neither of these

2.

When a chocolate bar is cut in half, its density is

a)

halved.

b)

unchanged.

c)

doubled.

3.

If a loaf of bread is compressed, its

a)

density decreases.

b)

density increases.

c)

neither of these

4.

When a chocolate bar is cut in half, its density is

a)

halved.

b)

unchanged.

c)

doubled.

5.
Here are 5 cubic centimeters (cm3).    All together they  have a mass of 20 g what is the density?
a)
20 g/cm3
b)
100 grams
c)
 4 g/cm3
d)
5 g/cm3
6.

Do all objects have the same density?

a)

yes

b)

no

7.

Find the density of a substance with a mass of 45 grams and a volume of 9 milliliters.

a)

5 kg/L

b)

5 g/ml

c)

45g

d)

36 g/ml

8.

Which liquid has the greatest density?

a)

Corn oil

b)

Shampoo

c)

Antifreeze

d)

Maple syrup

9.

Which liquid has the least density?

a)

Corn oil

b)

Shampoo

c)

Antifreeze

d)

Maple syrup

10.
The lowest part of the wave is?
a)
trough
b)
crest
c)
point of origin
d)
compression point
11.
The highest point of a wave is?
a)
crest
b)
trough
c)
point of origin
d)
comppression point
12.
What is the measure of how many waves pass a point in a certain amount of time?
a)
frequency
b)
wavelength
c)
midpoint
d)
crest and trough
13.
Which wave has a greater frequency?
a)
A
b)
B
14.
Which wave is pictured?
a)
Transverse
b)
Longitudinal
c)
Both
d)
Neither
15.
The frequency of a wave is measured in __________________. 
a)
inches
b)
hertz
c)
periods
d)
eras
16.
What number represents the amplitude?
a)
1
b)
2
c)
3
d)
4
17.
When a wave bends as it passes through at an angle from one medium to another.(example: pencil in a glass of water-)
a)
medium
b)
refraction
c)
reflection
d)
interference
18.
When a wave strikes and object and bounces off. (example echo)
a)
medium
b)
refraction
c)
reflection
d)
interference
19.
What kind of wave is pictured below?
a)
compressional wave
b)
transverse wave
c)
sound wave
d)
mechanical wave
20.
a)
Series circuit - Bulbs are lit
b)
Series circuit - Bulbs are off
c)
Parallel circuit - Bulbs are lit
d)
Parallel circuit - Bulbs are off
21.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
22.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
23.

Current is measured in...

a)

volts

b)

amperes

c)

watts

d)

ohms

24.

What is the current drawn by a 5 ohm resistor when it is connected to a 1.5 V battery?

a)

7.5 amperes

b)

3.33 amperes

c)

0.3 amperes

d)

6.5 amperes

25.

What is the resistance of an object that draws 0.24 A when connected to a 120 volt circuit?

a)

0.024 ohms

b)

28.8 ohms

c)

124 ohms

d)

500 ohms

26.
Does this statement best describe a parallel or a series circuit.
 
When more light bulbs are added they all remain bright. 
a)
Parallel circuit
b)
Series circuit
27.

Surface tension is the property of water in which...

a)

water molecules at the surface tend to stick together.

b)

water spills easily.

c)

water tends to be see-through.

28.

Describe COHESION.

a)

Water molecules attracted to other substances.

b)

Water molecules climbing upwards against the force of gravity.

c)

Water molecules dissolving many substances because of its polarity.

d)

Water molecules attracted to other water molecules.

29.
Water droplets take a spherical shape (as pictured) because of ____________
a)
adhesion
b)
cohesion
c)
capillary action
d)
solubility
30.

Match the following

a)

Solids

1.

Fixed shape, fixed volume

b)

Liquids

2.

Fit the shape of their container

c)

Gases

3.

Expand to fill all space

31.

Force that squeezes a material together.

a)

Compression

b)

Tension

c)

Torsion

32.

Force that stretches a material apart.

a)

Compression

b)

Tension

c)

Torsion

33.

When a load is placed on the middle of a horizontal beam supported at each end, the bottom part of the beam undergoes

a)

tension.


b)

compression.

c)

either of these

34.

When weight is applied to the top of a stone arch, the stone blocks in the arch undergo

a)

tension.


b)

compression.

c)

expansion.

d)

none of the above

35.

Water pressure is greatest against the

a)

top of a submerged object

b)

bottom of a submerged object

c)

sides of a submerged object

d)

none of these

36.

A dam is thicker at the bottom than at the top partly because

a)

water is denser at deeper levels

b)

water pressure is greater with increasing depth

c)

surface tension exists only on the surface of liquids

d)

it looks better

37.

Pumice is a volcanic rock that floats. The density of pumice is

a)

less than the density of water

b)

equal to the density of water

c)

more than the density of water

d)

dependent on the color of the pumice

38.

A completely submerged object always displaces its own

a)

volume of fluid

b)

weight of fluid

c)

density of fluid

d)

all of these

39.

What is the buoyant force acting on a 10-ton ship floating in the ocean?

a)

less than 10 tons

b)

10 tons

c)

more than 10 tons

d)

It depends on the density of sea water.

40.

When an object is partly or wholly immersed in a liquid, it is buoyed up

a)

by a force equal to its own weight

b)

by a force equal to the weight of the liquid displaced

c)

and floats because of Archimedes' principle

d)

but nevertheless sinks

41.

Archimedes' principle addresses

a)

drag force

b)

buoyant force

c)

gravitational force

42.
A buoyant force is an upward force applied on an object by a 
a)
Substance
b)
Fluid
c)
Pressure
d)
Displacement
43.

If an object weighing 50.0 N displaces a volume of water with a weight of 10.0 N, what is the buoyant force on the object?

a)

60.0 N

b)

50.0 N

c)

40.0 N

d)

10.0 N

44.

Two blocks attached to strings are at rest in a liquid, as shown. The only thing known about them is that they have the same dimensions. Which block has a greater mass?

a)

Block A

b)

Block B

c)

Both have the same mass since they are both at rest

d)

The answer can not be determined without knowing the density of the liquid.

45.

Which forces are responsible for capillary action?

a)

Adhesion, cohesion, and surface tension

b)

Gravity and friction

c)

Pressure and temperature

d)

Magnetism and electricity

46.
Why does water move from the roots to the leaves of plants through the plants' tiny tubes?
a)
specific heat 
b)

capillary action

c)

atoms

d)
density
47.

Water moves opposite of gravity

a)

capillary action

b)

infiltration

c)

porosity

d)

permeability

48.

Amy uses 20N of force to push a lawn mower 10 meters. How much work does she do?

(a)  

49.

A 900N mountain climber scales a 100m cliff. How much work is done by the mountain climber?

(a)  

50.
Which of these is a measure of force?
a)
100 newtons
b)
100 meters per second
c)
100 joules
d)
100 watts
51.
The unit of power is the...
a)
work
b)
watt
52.
The FARTHER you move an object, the more work you do.
a)
True
b)
False
53.

if you push a cart with a force of 60 N for 2 m... how much work have you done

a)

120 J

b)

30 J

c)

120 N

d)

30 N

54.
You do 90 joules of work in 30 seconds. How much power have you generated?
a)
30 watts
b)
3 watts
c)
120 watts
d)
270 watts
55.

You move a 0.8 kg object five meters in 4 seconds. How much power have you generated?

a)

160 watts

b)

10 watts

c)

6.4 watts

d)

17 watts

56.
What would have the greatest kinetic energy?
a)
A car driving down a hill.
b)
A person running down a hill. 
c)
A ball rolling down a hill. 
57.

Which object has the most potential energy?

a)

A ball resting on the ground.

b)

A ball being thrown at 100 miles per hour.

c)

A ball on top of a refrigerator.

d)

A ball resting on the edge of a cliff.

58.

The law of Conservation of Energy says________

a)

energy is constantly created

b)

energy can not be created or destroyed instead it changes from one form to another

c)

energy can not change forms

59.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
60.
The flow of electricity in a circuit-
a)
current
b)
flow
c)
circuit
61.
____________ allows electricity to flow.
a)
A conductor
b)
An insulator
c)
A magnet
62.

Electrons have a __________ charge.

a)

positive

b)

negative

c)

neutral

63.

Protons have a __________ charge.

a)

positive

b)

negative

c)

neutral

64.

An object becomes electrically charged when the atoms in the object gain or lose

a)

electrons

b)

protons

c)

neutrons

d)

all of the above

65.
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
66.
Which of the following is caused by static electricity?
a)
a stove getting hot when it is turned on
b)
a magnet being attracted to a refrigerator
c)
a lightning strike during a storm
d)
a light bulb coming on when a switch is turned on
67.

Which statement does NOT describe how electric changes affect each other?

a)

positive and negative charges attract

b)

positive and negative charges repel

c)

two positive charges repel

d)

two negative charges repel

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