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Worksheets5th Six Weeks Review
Total questions: 25
Worksheet time: 13mins
Roger heats a brass metal cube (specific heat = 375 J/kg·°C) to 70.0°C and places the cube into an insulated container of water (specific heat = 4182 J/kg·°C). He observes that the water temperature increases from 10.0°C to a final temperature of 18.0°C. What is the final temperature of the metal cube?
10.0°C
18.0°C
35.0°C
62.0°C
Which change will occur in a system with increasing entropy?
Thermal energy will increase.
Mechanical energy will increase.
Elastic potential energy will decrease.
Gravitational potential energy will decrease.
Which statement describes a solid compared to the other states of matter?
The particles have the least molecular kinetic energy and lowest system disorder.
The particles have the least molecular kinetic energy and greatest system disorder.
The particles have the greatest molecular kinetic energy and the lowest system disorder.
The particles have the greatest molecular kinetic energy and the greatest system disorder.
Air conditioners contain refrigerant, a substance that circulates through pipes of the
system. The refrigerant transfers large amounts of heat from the air inside a room to
the air outside by using a continuous cycle of evaporation and condensation. Which of
the following best explains why evaporation and condensation play an important role
in air conditioning?
Substances release heat energy when they evaporate and absorb heat energy when they condense.
Substances absorb heat energy when they evaporate and release heat energy when they condense.
Substances release heat energy when they evaporate and when they condense.
Substances absorb heat energy when they evaporate and when they condense.
Entropy is a measure of the amount of disorder in a system. The concept of entropy can be applied to an ice cube melting. Which statement best describes the puddle of water?
It is at minimum entropy and minimum order.
It is at maximum entropy and minimum order.
It is at minimum entropy and maximum order.
It is at maximum entropy and maximum order.
When water evaporates from Earth’s surface into the atmosphere, its molecules enter
the gas state. What subsequent change causes gas molecules to condense into the small water droplets that form clouds?
Mass is reduced.
Volume is increased.
Temperature is reduced.
Pressure is increased.
A diagram of the water cycle is shown.
Which occurs as water moves from evaporation to condensation in the water cycle?
Energy is consumed.
Some water disappears.
Mass is converted to energy.
Energy is released by water molecules.
When Dennis operates his lawnmower, he notices the engine makes a lot of noise. He also notices that the engine gets very hot. Which best describes the heat and noise generated from the lawnmower?
a change in phase
thermal expansion
an increase in entropy
mechanical advantage
Computers have devices called heat sinks designed to lower the temperature of a computer by scattering produced heat into the surrounding area. Which type of energy is kept away from a computer by a heat sink?
electrical
chemical
thermal
nuclear
When heat flows from a hot spot to a cooler spot, entropy increases. When heat is forced to flow from a cool spot to a warmer spot, entropy decreases. Marta is looking for something in her house that causes a decrease in entropy. Which of these should she choose?
an ice cube melting
the refrigerator
an egg frying
the toaster
An electric motor produces energy to turn a fan blade. The energy used to turn the fan blade is always less than that produced by the motor. Where does the remainder
of the energy go?
It is returned to the motor.
It is destroyed by friction.
It is changed into light energy.
It is converted to heat.
Which will increase the energy of motion of water molecules?
add heat
add ice
remove some of the water
place the water in the freezer
Four wave pulses are moving to the right through a uniform length of rope. Which statement correctly compares the wavespeed and energy of the pulses?
All of the pulses have the same wavespeed; A has the highest energy.
All of the pulses have the same wavespeed; C has the highest energy.
All of the pulses have a different wavespeed; A has the highest energy.
All of the pulses have a different wavespeed; C has the highest energy.
Given the frequency, f, and speed, c, of a beam of light, which formula is used to calculate the wavelength, λ?
λ=cf
λ=fc
λ=cf2
λ=fc2
The diagram shows a student forming waves using a rope. Which statement best describes what happens to the wavelength and amplitude of the wave when the student increases the upward and downward force?
The amplitude increases, but the wavelength decreases.
The amplitude increases, but the wavelength stays the same.
The amplitude decreases, but the wavelength increases.
The amplitude stays the same, but the wavelength increases.
As wave frequency is increased, wave energy
stays constant.
is unaffected.
increases.
decreases.
As Wave 1 moves to the right, what will the boat do?
move up and to the left
move up and then down
move to the top of the wave and stay there
move to the right and stay in front of the wave
Use the two sound wave patterns from an oscilloscope to answer the question that follows. How does Wave 1 compare to Wave 2?
Wave 1 is louder and higher pitched than Wave 2.
Wave 1 is quieter and higher pitched than Wave 2.
Wave 1 is louder and lower pitched than Wave 2.
Wave 1 is quieter and lower pitched than Wave 2.
Use the diagram to answer the question that follows. Which letter represents the amplitude of the wave in the diagram?
W
X
Y
Z
The electromagnetic spectrum shows the wavelength and frequencies of light. How is infrared radiation different from visible light?
It is invisible and has an amplitude lower than visible light.
It is invisible and has a longer wavelength than visible light.
It has a shorter wavelength and lower frequency than visible light.
It has a longer wavelength and higher frequency than visible light.
Water is dripping off of a bridge into a still lake. After one of the drops of water hits the surface of the lake, rings moved outward from the center where the drop hit. Which statement best describes what happened after the drop hit the still water?
Forces in the water decreased.
Energy in the water decreased.
Energy flowed through the water in waves.
Forces in the water collided with each other
Tuning forks make a sound when they are struck or hit. The tuning forks shown are labeled with the frequency of the sound they produce. Moving from left to right, each tuning fork is struck one at a time. The same amount of force is used to strike each fork. What change in the sounds will be observed?
The speed of the sounds will decrease.
The volume of the sounds will increase.
The pitch of the sounds will become lower.
The pitch of the sounds will become higher.
Amber studied a graph of a mechanical wave. If Amber wanted to find out the wavelength, from which points should she measure?
1 to 3
1 to 5
2 to 4
3 to 5
Maria was making a drawing showing the different parts of a wave. Which number should she label as the amplitude of the wave?
1
2
3
4
During a 4th of July celebration, scientists were measuring sound waves as the fireworks exploded. Which illustration indicates that the fireworks were becoming louder?
