1. T/F Light bulbs connected
in series all carry the same
current, regardless of their
resistances.
TRUE

2. When connected to a 120-volt
power supply, how much current
exists in a light bulb that has a
resistance of 240 ohms?
a. 28,800 A b. 240 A
c. 120 A d. 0.5 A
d. 0.5 A

3. If two negative charges are held close
together and then released, the
charges will
a. accelerate toward each other.
b. accelerate away from each other.
c. move at a constant speed away
from each other.
d. not move.
b. accelerate away from each other

4. T/F Most of the electromagnetic
spectrum consists of Visible Light?
False

5. Electromagnetic waves are
a. transverse waves.
b. longitudinal waves.
a. Transverse

6. Which of the following is NOT an
electromagnetic wave?
a. Sound
b. Radio
c. Light
d. X-ray
a. Sound

7. T/F Light sometimes acts as a
wave and sometimes as a particle.
True

8. If you accidentally grabbed the
prongs of a partially plugged-in 120-
V electrical plug on a day when your
skin resistance was 120,000
ohms, how much current would
pass through your body?
a. 12,000,000 A b. 1000 A
c. 120 A d. 0.001 A
d. 0.001A

9. A small, positively charged object
near a positively charged sphere is
moved closer to the sphere. The
electrical potential energy of the
small object
a. increases.
b. decreases.
c. stays the same.
a. increases

10. When one light bulb in a series
circuit containing several light
bulbs burns out,
a. the other light bulbs burn
brighter.
b. nothing changes in the rest of
the circuit.
c. none of the other bulbs will light
up.
c. none of the other bulbs will light
up.

11. A 38-kg boy is rollerskating at a
speed of 1.8 m/s when he bumps
against a box. The box slows the
boy’s speed to 1.2 m/s in 0.40 s.
What is the force of the boy
against the box?
a. 68.4N
b. 45.6N
c. 57N
d. 15.2N
c. 57N

12. A 2.0-kg book is on a shelf that is
1.6 m high. What is the
gravitational potential energy of
the book relative to the ground?
a. 3.21N
b. 31.39J
c. 31.39N
b. 31.39J

13. An object that has kinetic energy
must be
a. moving.
b. falling.
c. elevated.
d. at rest.
a. moving

14. “Energy can neither be created or
destroyed” is an example of
a. a scientific hypothesis
b. a theory
c. a scientific law
d. an outdated idea
c. a scientific law

15. T/F The unit of electric potential is
the joule.
False

16. T/F Sound can travel through
solids, liquids, gases, and even a
vacuum.
False

17. Compared to the speed of
light, sound travels
a. faster
b. slower
c. about the same
b. slower

18. A Skater at the top of a 30m-high
hill prepares to go down. He wants
to estimate his speed at the
bottom of the hill. The skater’s
mass is 95kg. How fast would he be
going?
a. 42.75 m/s
b. 43.17 m/s
c. not enough information
b. 43.17 m/s

19. Electromagnetic waves have
characteristics of
a.
amplitude, frequency, compression
s
b. wavelength, trough, period
c. rarefraction, speed, trough
d. amplitude, longitude, node
b. wavelength, trough, period

20. Suppose the gravitational force
between two massive balls is 10 N.
If the distance between the balls is
cut in half, what is the force
between the masses?
a. 20N
b. 5N
c. 2.5N
d. 40N
d. 40N

21. The speed of sound in dry air at 20
degrees Celsius is 340 m/s. How far
away is a jet plane when you notice
a 2-second delay between seeing
the plane and hearing it?
a. 6800 m
b. 40 m
c. 340 m
d. 680 m
d. 680 m

22. An arrow in a bow has 70 J of
potential energy. Assuming no
energy loss, how much kinetic
energy will it have after it has
been shot?
a. 2450 J
b. 140 J
c. 70 J
c. 70 J

23. T/F Whenever one object exerts a
force on a second object, the
second object always exerts the
same amount of force back on the
first object.
True

24. T/F A rocketship can work in space
because of Newton’s 3rd Law.
True

25. In an alternating current circuit,
electron flow is
a. slower than a snail’s pace.
b. almost the speed of light.
c. simply back and forth, going
nowhere.
c. simply back and forth, going
nowhere.

26. A heavy-weight boxer’s punch
measures 12000N. Can the boxer
punch a sheet of paper with all this
force?
a. no, the paper limits his force
b. yes, but the impact is limited by
the paper’s weight
c. no, Newton’s 2nd law prohibits it
d. yes, the paper accelerates with
12000N
b. yes, but the impact is limited by
the paper’s weight

27. When one light bulb in a parallel
circuit containing several light
bulbs burns out,
a. the other light bulbs burn
brighter.
b. nothing changes in the rest of
the circuit.
c. none of the other bulbs will
light up.
b. nothing changes in the rest of
the circuit.

28. A woman weighing 500 N sits on
the floor. She exerts a force on the
floor of
a. 50.96
b. 50.96 N
c. 500 N
d. 227 lb
e. 50 N
c. 500 N

29. A 60-kg person on in-line skates
pushes against a wall with a force
of 30 N and recoils. What
acceleration does that person
experience?
a. 2 m/s2
b. 0.5 m/s2
c. ½
d. 90 V
b. 0.5 m/s2

30. If Skelly the skater’s speed is
increased so he has twice the
momentum, then his kinetic
energy is increased by
a. 8
b. 1/2
c. 2
d. 4
d. 4

31. T/F If a bicycle and a parked car
have a head-on collision, the force
of impact is greater on the bicycle.
False

32. If you were to weigh yourself in an
elevator that is accelerating
upward, compared to your
ordinary weight you would weigh
a. more than normal
b. the same
c. less, but more than zero
d. zero
a. more than normal

33. Imagine you are standing atop a
ladder so tall that you are 3 times
as far from Earth’s center. What
would be your weight at the
top, relative to your weight at the
surface?
a. 3 times more
b. 1/3 times less
c. 1/9 as much
d. 9 times more
c. 1/9 as much

34. T/F When you turn on a light,
electrons move at speeds near the
speed of light in order to light up
the light bulb.
True

35. If a horse pulls on a wagon at
rest, the wagon pulls back equally
as much on the horse. Will the
wagon be set into motion?
a. yes, because there is a net force
on the wagon
b. yes because the horse’s pull on
the wagon is greater than the
wagon’s pull on the horse
c. no, the forces cancel each other
a. yes, because there is a net force

36. T/F A good reflector of heat is a
poor absorber of heat.
True

37. Heat transfer by conduction occurs
when
a. electrons bump into other atoms
and other electrons
b. large number of atoms move from
place to place
c. when atoms give off heat in the
form of Electromagnetic waves
d. when Electromagnetic waves
travel in a vacuum
a. electrons bump into other atoms
and other electrons

38. A closed circuit is a circuit in which
current
a. can flow.
b. is prevented from flowing.
a. can flow

39. The gravitational field strength
near the center of Earth is
a. less than on the surface
b. equal as on the surface
c. zero
d. more than on the surface
d. more than on the surface

40. Current from a battery is
a. DC.
b. AC.
a. DC

41. When resistors are put in series
next to each other, their overall
resistance is
a. larger than that of an individual
resistor.
b. the same as the resistance of
one of the resistors.
c. smaller than the resistance of
any of the resistors.
a. larger than that of an individual
resistor.

42. The reason you can hold your
fingers beside a candle flame
without getting hurt is that
a. air is a poor heat conductor
b. hot air rises
c. cool leaves your fingers into the
candle
a. air is a poor heat conductor

43. Heat is measured in
a. calories
b. kilocalories
c. Joules
d. all of the above
d. all of the above

44. T/F The rate at which work is done
is called Power
True

45. T/F Objects only move when a
force is exerted
True

46. What is the ground speed of a bird
flying at 3.0 m/s when there is a
4.0 m/s crosswind?
a. 3.0 m/s
b. 4.0 m/s
c. 5.0 m/s
d. 9.0 m/s
c. 5.0 m/s