Two waves have the following waveforms. Which conclusion can best be supported by the illustrations?

Wave B is a visible light wave.

As Wave 1 moves to the right, what will the boat do?

move to the top of the wave and stay there

move to the right and stay in front of the wave

Which best explains how an object is seen by the human eye?

Light is reflected by the object and detected by the light receptors in the eye.

Light receptors in the eye detect infrared light and send the image to the brain.

Light receptors in the eye reflect light of a specific wavelength onto the object.

Light is detected by the light receptors in the eye if the object is black and white.

Emily’s younger sister Amy has just learned that radio waves, like X-rays, are a form of electromagnetic energy. Amy asks Emily why radio waves aren’t dangerous like X-rays. Which answer is most accurate?

Radio waves have a lower energy than X-rays.

Radio waves have a lower velocity than X-rays.

Radio waves have a greater amplitude than X-rays.

Radio waves have a greater frequency than X-rays

How can the strength of an electromagnet be increased?

Increase the number of wire turns.

Increase the length of the core material.

Decrease the voltage in the coil.

Decrease the magnetic permeability of core material.

Which of the following would cause the greatest increase in resistance to a wire in a circuit?

reducing the cross-sectional area of the wire by one-quarter

tripling the resistivity of the material

doubling the length of the wire

reducing the length of the wire by one-half

If bulb 8 burns out, how will the remaining bulbs be affected?

All the remaining bulbs go out.

All the remaining bulbs stay lit.

Only bulbs 1 through 4 stay lit.

Bulb 4 is the only other bulb to go out.

The magnet on the right is moved toward the suspended magnet on the left. Which statement describes the interactions of the magnets in terms of their magnetic fields?

A repulsive force between the two magnets causes the suspended magnet to swing to the left.

A repulsive force between the two magnets causes the suspended magnet to oscillate like a pendulum.

An attractive force between the two magnets causes the suspended magnet to swing to the right.

An attractive force between the two magnets causes the suspended magnet to oscillate like a pendulum.

The diagram shows the view and speed of the three cars from above a racetrack during a race. From the perspective of the driver of Car 1, which observation would be made?

Car 1 is passing one car and will be passed by another car.

Car 1 is passing one car that just passed the other car.

Car 1 is passing two cars, which appear to be sitting still.

Car 1 is being passed by two cars, which appear to be moving at the same rate.

The following graph shows the position versus time for a particle. Which of the following describes the particle’s motion for the time interval between 4 and 8 seconds?

The particle has a constant velocity equal to –2.5 m/s.

The particle has a constant velocity equal to +2.5 m/s.

The particle has a constant acceleration equal to –2.5 m/s 2 .

The particle has a constant acceleration equal to +2.5 m/s 2 .

Andy was driving east with a velocity of 2 meters per second (m/s) relative to the ground. While he was driving, he noticed that he was approaching a road sign. Which statement correctly describes the motion of the road sign as seen from Andy’s frame of reference?

The road sign appears to move at a constant 2 m/s to the west.

The road sign appears to accelerate 2 m/s 2 toward the east.

The road sign appears to accelerate 2 m/s 2 toward the west.

The road sign appears to move at a constant 2 m/s to the east.

Student X pushes a 10-N box with a force of 2 N. At the same time, Student Y pushes the same box with a force of 6 N, but in the opposite direction. Which would most likely occur? (Ignore friction.)

The box will move toward Student X.

The resultant force on the box would be 8 N.

The resultant force on the box would be 18 N.

The box will move toward Student Y.

A ball at rest is dropped and hits the ground in 1.5 s with a final speed of 15 m/s. How would the acceleration and final speed of the ball be affected if it were dropped from a greater height on Earth? (Ignore friction.)

Its final speed would increase because its rate of acceleration would remain the same.

Its final speed would remain the same because its rate of acceleration would remain the same.

Its final speed would remain the same because its rate of acceleration would decrease.

Its final speed would increase because its rate of acceleration would increase.

During a classroom discussion on motion, the teacher instructs the class to write down something that specifically addresses Isaac Newton’s second law of motion. Which of these responses would best represent the second law?

Acceleration depends on the force applied and the mass of an object.

For every action there is an equal and opposite reaction.

Every object continues at rest unless acted on by outside forces.

Every object attracts every other object and the force is proportional to their masses.

The drawing below shows three sealed containers labeled X, Y, and Z. Each contains a sample of matter in a different state. Based on this information, which statement most likely represents the state of matter in each container?

X contains a liquid, Y contains a gas, and Z contains a solid.

X contains a solid, Y contains a liquid, and Z contains a gas.

X contains a solid, Y contains a gas, and Z contains a liquid.

X contains a liquid, Y contains a solid, and Z contains a gas.

What change takes place in a substance as the molecular motion of that substance increases?

The substance changes from a liquid to a gas.

The substance changes from a gas to a liquid.

The substance changes from a liquid to a solid.

The substance changes from a gas to a solid.

Water puddles on a sidewalk evaporate when the Sun heats the water. Which of these best describes what is happening as the water evaporates?

Water becomes a gas as it absorbs energy from the Sun.

Water changes phase as it releases heat to the environment.

Water boils as it absorbs energy from the sidewalk.

Water evaporates as its thermal energy is transferred to the air.

Hydrogen gas and oxygen gas combine to form water. Which would be a more concise way of expressing what happens in this chemical reaction?

describing the rearrangement of the atoms

describing the procedure for creating this change

A plastic rod is rubbed with a piece of wool, and a glass rod is rubbed with a piece of silk. An object is placed near the plastic rod, and an attractive force is detected. How will the object react when near the glass rod?

An attractive force will occur.

An electric discharge will occur.

A student studying the characteristics of the element lithium (Li) observed that it reacts with water (H 2 O). Based on this information, the student hypothesized that sodium (Na) would also react with water. Which information about the elements supports this hypothesis?

Sodium has the same valence electron structure as lithium.

Sodium and lithium are both metals.

Sodium is near lithium in the periodic table.

Sodium and lithium are both solids at room temperature.

PS Exam #3

Authored by Lauren Royal-Woods

Physics, Chemistry

9th - 12th Grade

Used 26+ times

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44 questions

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MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Three fundamental states of matter are represented in the diagrams. What is the order of the diagrams if arranged from low kinetic energy to high kinetic energy?

I, II, III

II, III, I

II, I, III

III, II, I

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which statement best compares a single burning match to an entire box of matches burning together?

The single match will produce the same temperature and the same amount of heat as the box of matches will produce.

The single match will produce the same temperature and a lot less heat than the box of matches will produce.

The single match will produce a much lower temperature and the same amount of heat as the box of matches will produce.

The single match will produce a much lower temperature and a lot less heat than the box of matches will produce.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

A wedge and a screw are variations of what type of simple machine?

pulley

lever

wheel and axle

inclined plane

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Emily is riding her bicycle. Which best explains why only some of the energy used to pedal her bicycle is transferred into forward motion of the bicycle?

The energy of the bicycle tire is applied in a circular motion.

The energy of the bicycle is transferred to only one wheel.

The gears and chain of the bicycle are covered with oil.

The gears and chain of the bicycle generate friction.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

When a rock is dropped from a height of one meter, the gravitational potential energy of the rock is converted to kinetic energy. When the rock hits the floor and does not bounce, what happens to the kinetic energy of the rock?

The energy is converted to heat and sound.

The energy is destroyed and cannot change form.

The energy is converted to chemical energy.

The energy is returned to gravitational energy.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

A bicyclist at the top of a hill begins to coast without pedaling. The bicycle speeds up as it descends to the bottom of the hill and then slows down as it continues up a second hill, where it stops. Which of these sequences best describes the energy change of the bicycle from the top of the hill until it stops?

potential — kinetic — kinetic

kinetic — potential — potential

kinetic — potential — kinetic

potential — kinetic — potential

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Light rays are focused by the lens of a camera through the process of

reflection.

refraction.

dispersion.

diffraction.

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PS Exam #3

Three fundamental states of matter are represented in the diagrams. What is the order of the diagrams if arranged from low kinetic energy to high kinetic energy?

Which statement best compares a single burning match to an entire box of matches burning together?

A wedge and a screw are variations of what type of simple machine?

Emily is riding her bicycle. Which best explains why only some of the energy used to pedal her bicycle is transferred into forward motion of the bicycle?

When a rock is dropped from a height of one meter, the gravitational potential energy of the rock is converted to kinetic energy. When the rock hits the floor and does not bounce, what happens to the kinetic energy of the rock?

Light rays are focused by the lens of a camera through the process of

When a light bulb is used to light a room, which of the following is transferred by the light waves from the bulb to the surfaces of the room?

Two waves have the following waveforms. Which conclusion can best be supported by the illustrations?

As Wave 1 moves to the right, what will the boat do?

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