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WorksheetsPhysics Final Exam Semester 2
Total questions: 72
Worksheet time: 2hrs 31mins
When an object gains electrons it becomes __________
Neutral
Positively charged
Negatively charged
After a balloon is rubbed against wool, the two objects will ________ each other because they have ___________ charges
attract; like
attract, opposite
repel; like
repel; opposite
Which statement is true of a positively charged object?
Positively charged objects do not contain any electrons.
Positively charged objects do not contain neutrons or electrons.
There is a lack of electrons on a positively charged object.
The protons and the electrons are both positively charged on such objects.
A balloon is rubbed against a student's hair and then touched to a wall. The balloon sticks to the wall due to
The balloon is charged neutral, so is the wall, so it attracts to the wall
The balloon is charged opposite the wall, so it attracts to the wall
The balloon has a charge, so it attracts the neutral wall
The wall grounds the balloon, so it sticks
Materials through which electrons move easily:
insulator
conductor
Ms Pippin rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?
The balloons will repel each other.
The balloons will attract each other.
The balloons will become positively (+) charged.
The balloons will pop.
During induction, grounding is necessary in order for the neutral object to become charged.
true
false
Students constructed a circuit using different-colored lightbulbs. What will happen if Switch 3 is closed and the other switches are left open?
Only the white bulb will operate
None of the bulbs will operate
Only the white and yellow bulbs will operate
Only the red and blue bulbs will operate
In some circuits that are used for decorating, one burned-out lightbulb will prevent all the other lightbulbs from lighting. In other circuits, one burned-out lightbulb will have no effect on the other lightbulbs. In which of these circuits will the other lightbulbs still light even if one bulb is burned out?
(I X R)
What is a kilowatt hour?
A boat burning fuel.
A way to tell time.
Using a kilowatt for one hour.
Singing outside.
How do you calculate total resistance in a parallel circuit?
R1 + R2 + R3
R1 - R2 - R3
1/R1 +1/R2 + 1/R3 = 1/RT
R1 = R2 = R3
What is the transfer of energy in when you plug in a motor and it spins?
chemical to mechanical
electrical to mechanical
mechanical to electrical
physical to potential
Are the magnetic field lines in the picture correct?
Yes, because they point from north to south.
No, because they point from north to south (they're supposed to go the other way).
Yes, because the North pole is on the left in all pictures.
No, because the North pole is on the left in all pictures (it's supposed to be on the right).
The strongest part of a magnet is...
the bars .
the force field.
the poles.
the middle.
What is the Doppler Effect?
A change in frequency due to the relative motion of a wave source and an observer
When a wave overlaps with another wave
When a wave bounces off of another object
When a wave bends due to traveling through a different medium
The pitch of a sound wave relates to the wave's _________________.
Amplitude
Frequency
Wavelength
Period
An ambulance is driving towards you as you stand on the sidewalk. What happens to the pitch of the siren as it comes towards you?
It increases
It decreases
You are driving in a car and honk the horn at a person standing in the street. As you approach the person, what happens to the pitch of the horn according to you in the car?
It increases
It decreases
It stays the same because you are in the car moving with the sound.
You are standing on the side of the road when a police car races past you with its siren on. After the police car passes you, what happens to the pitch of the siren?
It increases
It decreases
It turns red
____________ is the number of occurrences over a period of time.
Wave
Vibration
Frequency
Sound
Herts (Hz) refers to the number of
Wave Cycles
Water Cycles
Tri Cycles
Motor Cycles
A _____________________ is the distance between two peaks or two troughs.
amplitude
wavelength
frequency
compression
Waves that require a medium to travel are:
mechanical waves
transverse waves
electromagnetic waves
light waves
What happens when you increase the amplitude of a sound?
it makes the sound louder
it makes the sound travel faster
it makes the sound softer
it changes the pitch or note of the sound
Which wave in the diagram has the greatest frequency?
1
2
3
4
Which wave in the diagram has the longest wavelength?
1
2
3
4
This sound has high pitch, which means it has a(n):
Higher frequency
Lower frequency
Higher amplitude
Lower amplitude
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45
What principle is responsible for light spreading as it passes through a narrow slit?
refraction
polarization
diffraction
interference
What principle is responsible for alternating light and dark bands when light passes through two or more narrow slits?
refraction
polarization
diffraction
interference
Which lens represents the path light takes through a diverging lens?
A student draws three rays of light from point P through a converging lens. Each point labelled F is a principal focus of the lens. Which of the rays are drawn correctly?
ray Y only
ray Z only
ray X and ray Y
ray X and ray Z
In alpha decay, the mass number...
increases by 2
decreases by 2
increases by 4
decreases by 4
The mass number of Neptunium (Np) is (a) .
85209At = ___ + 24He
614C = ___ + -10e
In beta decay, the mass number
decreases by 4.
increases by 1.
stays the same.
decreases by 2.
