WorksheetsFinal review #2
Total questions: 48
Worksheet time: 48mins
What is the unit of frequency?
Hertz
Meter
Second
Newton
Which of the following is required for a mechanical wave to travel?
Medium
Vacuum
Light
Sound
A wave has a wavelength of 5 m and a frequency of 40 Hz. What is its speed?
200 m/s
8 m/s
45 m/s
100 m/s
A wave travels at 6.0×10^5 m/s with a frequency of 2.0×10^22 Hz. What is the wavelength?
3.0×10^-17 m
3.0×10^17 m
1.2×10^17 m
1.2×10^-17 m
A wave has a frequency of 1.5×10^8 Hz and a wavelength of 3.0×10^-23 m. What is the wave speed?
4.5 m/s
4.5×10^-15 m/s
4.5×10^15 m/s
4.5×10^23 m/s
A wave travels at 300 m/s with a wavelength of 3 m. What is the frequency?
100 Hz
90 Hz
300 Hz
600 Hz
Which wave property is directly related to energy?
Amplitude
Frequency
Wavelength
Speed
What happens to wavelength as frequency increases?
Decreases
Increases
Stays the same
Doubles
In a longitudinal wave, the stretched-out area is called:
Rarefaction
Compression
Crest
Trough
Which wave has the most energy?
Gamma rays
Radio waves
Microwaves
Infrared
Which wave has the least energy?
Radio waves
Gamma rays
X-rays
Ultraviolet
What is true about all electromagnetic waves?
They travel at the speed of light
They require a medium
They are longitudinal
They have the same frequency
Which EM wave has the shortest wavelength?
Gamma rays
Radio waves
Microwaves
Infrared
Which color of visible light has the longest wavelength?
Red
Blue
Green
Violet
Which color of visible light has the highest frequency?
Violet
Red
Green
Yellow
As EM wave frequency increases, its energy:
Increases
Decreases
Stays the same
Doubles
Which EM wave is used in X-ray imaging?
X-rays
Gamma rays
Ultraviolet
Infrared
Which EM wave is used for radios and TVs?
Radio waves
Microwaves
Infrared
Ultraviolet
Which wave type is not electromagnetic?
Sound waves
Radio waves
Microwaves
Infrared
When two equal and opposite forces act on the same object, they are:
Balanced
Unbalanced
Net force
Friction
What is the net force if a block experiences 12 N right and 8 N left?
4 N right
4 N left
20 N right
20 N left
What happens when forces are unbalanced?
The object accelerates
The object remains at rest
The object moves at constant speed
The object decelerates
A child pushes a wagon harder and it moves faster. This demonstrates:
Newton's Second Law
Newton's First Law
Newton's Third Law
Law of Conservation of Energy
What force law explains that lighter objects accelerate more if the same force is applied?
Newton's Second Law
Newton's First Law
Newton's Third Law
Law of Universal Gravitation
Which graph best shows Newton’s Second Law (F vs. a)?
Linear graph
Parabolic graph
Exponential graph
Logarithmic graph
What does a steeper slope on a velocity-time graph represent?
Greater acceleration
Greater speed
Greater distance
Greater time
List scalar quantities?
Speed, Distance, Mass
Velocity, Force, Acceleration
Displacement, Momentum, Energy
Weight, Pressure, Power
What is kinetic energy?
Energy of motion
Stored energy
Energy of position
Thermal energy
What is potential energy?
Stored energy
Energy of motion
Thermal energy
Electrical energy
The equation for kinetic energy is:
KE = 1/2 mv^2
PE = mgh
E = mc^2
F = ma
The equation for potential energy is:
PE = mgh
KE = 1/2 mv^2
E = mc^2
F = ma
What is the mechanical energy of a system?
Sum of kinetic and potential energy
Sum of thermal and electrical energy
Sum of chemical and nuclear energy
Sum of sound and light energy
A 65 kg box is 10 m high. What is its potential energy?
6500 J
650 J
65000 J
65 J
A 15 kg object at 6 m/s – what is its KE?
270 J
90 J
540 J
180 J
A 0.5 kg rock at 5 m height – what is PE?
25 J
2.5 J
50 J
5 J
As KE increases, PE:
Decreases
Increases
Stays the same
Doubles
When water is heated from 15°C to 25°C, its KE:
Increases
Decreases
Stays the same
Doubles
When your hand touches an ice cube, heat:
Transfers to the ice cube
Transfers to the hand
Stays the same
Doubles
What limits the transfer of heat?
Insulation
Conduction
Convection
Radiation
How is heat transferred by conduction?
Through direct contact
Through fluid movement
Through electromagnetic waves
Through sound waves
What is the product of mass and velocity?
Momentum
Force
Energy
Power
A 0.2 kg object moving at 30 m/s has what momentum?
6 kg·m/s
60 kg·m/s
0.6 kg·m/s
600 kg·m/s
What property explains why a coin drops into a cup when the card is pulled?
Inertia
Momentum
Friction
Gravity
Two students on a frictionless surface push off each other. Who accelerates more?
The lighter student
The heavier student
Both accelerate equally
Neither accelerates
If an object has 120,000 kg·m/s of momentum and a velocity of 12 m/s, what is its mass?
10,000 kg
1,000 kg
100 kg
12,000 kg
What is the unit for momentum?
kg·m/s
N
J
W
The sum of kinetic and potential energy is called:
Mechanical energy
Thermal energy
Chemical energy
Nuclear energy
List some vector quantities. (magnitude + direction)
Velocity, Force, Acceleration
Speed, Distance, Mass
Energy, Power, Pressure
Temperature, Time, Length
