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WorksheetsFall Semester Test Review
Total questions: 48
Worksheet time: 24mins
Which of the following terms refers to the distance between two consecutive wave crests?
wave height
wave crest
trough
wavelength
Letter D represents the __________ of the wave.
amplitude
crest
frequency
wavelength
The distance, A, in the image represents
amplitude.
frequency.
Two birdsongs are represented by the two models of a wave shown here. Which statement explains the difference or similarity between the two birdsongs?
The two birdsongs have different frequencies, indicating they produce different pitches.
The two birdsongs have identical wave patterns, indicating they sound the same.
The two birdsongs have the same amplitude, indicating they are equally loud.
The two birdsongs have different wavelengths, indicating they have the same pitch.
Nyla plays the trumpet very well. She can hit a middle C note perfectly every time. Suddenly, she hit a middle C, but it sounds much louder than before. Which statement explains the changes to the sound when the note was louder?
She blew with more energy, increasing the amplitude of the wave.
She blew with more force, increasing the wavelength of the wave.
She blew with more force, decreasing the frequency of the wave.
She blew with less force, allowing the distance traveled by the sound waves to increase.
Old cassette tape sound recordings often would have extra noise on the tape. A new digital computer file only contains the recorded sound. Which statement is the best conclusion that can be drawn from this information?
Digital sound recording is more reliable than the older method.
Digital sound recording takes up less space than the older method.
Digital sound recording is cheaper to produce than the older method.
Digital sound recording can be copied much easier than the older method.
Digital ultrasound imaging is being used more frequently for medical imaging. Select the statement that is not an advantage of digital ultrasound over analog ultrasound or x-rays.
Digital ultrasounds produce better quality images.
Digital ultrasounds don't require special equipment or software.
Digital information can be easily shared through networks or WiFi.
Digital ultrasounds don't expose patients to harmful levels of radiation.
QR (Quick Response) codes, like the one in this image, are images that can be scanned like bar codes. Which statement BEST describes how they are used?
To store large amounts of data
To quickly access information or websites
To replace traditional bar codes
To create digital art
Cassette tape record often include extra pops and noise. Digital recordings only include the actual recorded sound. Which statement is the best conclusion based on these facts?
Digital recordings are more reliable than the older method.
Digital recordings are require less space than the older method.
Digital recordings are less expensive to produce than the older method.
Digital recordings are can be transmitted faster than the older method.
Based on the diagram, which signal is most likely a digital signal?
Signal A
Signal B
Which of these is an advantage of digital storage of information over analog?
A copy of an analog file is never as good as its original.
Sound can be recorded either digitally or using analog techniques.
Analog signals take up less bandwidth or storage space than digital.
Analog storage of information is continuous and capture a more pure sound.
Which statement explains the reasons for this progression in information delivery?
It is due to advancements in technology and communication methods.
It is caused by a decline in literacy rates.
It results from a decrease in available information sources.
It is because traditional methods are more effective.
Digital recording and transmission often requires the signal to be transmitted using a code. Which statement would suggest an advantage of this fact?
A. Coding of the signal can keep the information secret during transport.
B. Coding requires all users to have a method to decode information.
C. Coded information may require larger bandwidth to transmit.
D. Coding may require more time to record information.
Consider the collision between the moving cue ball and the red 15 ball that is at rest on the pool table. Which statement does NOT describe what occurs when the cue ball collides with the 15 ball?
A. Each ball experiences an equal force directed in opposite directions.
B. The 15 ball experiences a rightward force that causes it to speed up.
In the context of Newton's laws, which statement is INCORRECT?
The club and the golf ball experience equal accelerations.
The golf ball experiences a greater acceleration due to its smaller mass.
The forces on the club and ball are equal in magnitude and opposite in direction.
The force experienced by the club head is equal to the force experienced by the golf ball.
Which would best be explained using Newton's Third Law?
The acceleration of the 15 ball is greater than that of the cue ball.
The moving cue ball experiences a leftward force that causes it to slow down.
Which of the following is an example of Newton's Third Law?
A. A gun moves backward while firing a bullet.
B. A bicyclist coasts down from the top of a hill.
C. A car stops short and the passenger moves forward.
D. A larger engine allows a car to accelerate faster.
Two astronauts are playing catch with a ball in space. The first astronaut throws the ball; and
the ball moves, but the astronaut doesn't.
the ball moves, and so does the astronaut.
the ball doesn't move, but the astronaut does.
the ball doesn't move, and neither does the astronaut.
Which would BEST describes what occurs when a ball is thrown against a wall?
The ball will not bounce off the wall.
The ball hits the wall hard enough to bounce off of it.
The wall is stronger than the ball and neither exerts any forces.
The ball exerts a force on the wall and the wall exerts a force back.
During a lab investigation of Newton’s laws of motion, a student pulled a tablecloth out from under a beaker of water and a science book. Both items remained on the table after the tablecloth was removed. Which of these best explains why the beaker of water and science book stayed on the table instead of falling off the table when the tablecloth was removed?
A. Moving the tablecloth applied an action force on the items and the items applied a reaction force on the table.
B. The tablecloth had less mass than the items, so a smaller force of gravity acted on the items.
C. The acceleration of the items was equal and opposite to the acceleration of the tablecloth.
D. The items were at rest until the tablecloth was removed, so they tended to remain in the same location.
A student jumps off a skateboard at rest. The student jumps toward the north. In which direction does the skateboard move?
South
East
North
West
Based on the law of action-reaction, in what direction will the skateboard most likely move as the student jumps off?
South
West
East
North
Cars are built with a crumple zone because:
It helps absorb impact energy during a collision, protecting passengers.
It makes the car faster.
It improves fuel efficiency.
It reduces the need for seat belts.
Which statement best describes the function of a car's crumple zone?
The crumple zone transfers the force of a collision from the car to the object it collides with, reducing the chance of injury to passengers.
The crumple zone is made from cheaper materials, so it costs less to repair after a collision.
The crumple zone absorbs the force of a collision, reducing the chance of injury to passengers.
The crumple zone is made from cheaper materials, so the car costs less to make.
You are sitting in a car that isn't moving; suddenly, the car quickly accelerates. Your body seems to be pushed back against the seat. Which word best explains why your body seemed to be pushed backward against the seat?
newton
vector
inertia
gravity
Sam is pushing a cart. How can he make the cart move faster?
He can add weight to the cart.
He can push the cart up a ramp.
He can take the wheels off the cart.
He can increase the force of his push.
The image shows two opposite forces acting on a rolling cart, what can we say is true about the affect of the forces on the cart?
It cannot be determined without knowing which man is stronger.
It cannot be determined because one man is taller than the other.
The forces are unbalanced, and net force on the cart moves it to the left.
The forces are unbalanced, and net force on the cart moves it to the right.
Remember, the girls are studying Newton's 2nd law: F = ma. The teacher asked the girls to hypothesize about the acceleration in each one of the four trials. Then they would use their data to calculate "a" or acceleration in the formula. Help them out. What would they hypothesize about the value of "a" in this experiment?
The greater the force, the greater the acceleration.
The acceleration would decrease as the mass increased.
Four students tried out for a softball team. Each student threw the ball from the pitcher’s mound to home plate. The coach recorded how many seconds it took each throw to reach home plate. Ball Throws Student | Time (seconds) Jake | 2.5 Pete | 3 Leroy | 3.5 Connor | 4 Which student threw the ball with the greatest force?
Connor
Jake
Leroy
Pete
Electromagnet Challenge: What is the mass lifted by Design #1 (Iron nail, D-cell battery, 100 cm wire, switch)?
24g
10g
50g
100g
The student groups constructed and tested the electromagnets. What was key to maximizing the electromagnet's strength?
The absence or presence of a switch.
The length of wire and number of coils.
Whether or not the students used an iron core.
The size of the battery and amount of electrical energy.
Which statement about magnetic poles is accurate?
Same magnetic poles attract, while different magnetic poles repel.
Same magnetic poles attract, while different magnetic poles attract.
Opposite magnetic poles attract, while like magnetic poles repel.
Opposite magnetic poles repel, while like magnetic poles attract.
Which change would result in a stronger electromagnet?
Reducing the number of batteries
Increasing the voltage of the battery
The class wants to be able to lift a four pound plate with the electromagnet. What should they do?
Wrap an even larger nail in three coils of wire.
Wrap the nail with wire six times, not three.
Wrap the nail with only one coil of wire.
Try using a smaller battery.
The basic concept of how a simple motor works is explained by which statement?
When a fan blows on a wire, it causes it to spin, creating a force.
When a fan blows on a wire, it causes it to spin, creating an electrical current.
When a wire that carries electrical current is placed in zero gravity, the wire experiences a force.
When a wire that carries electrical current is placed in a magnetic field, the wire experiences a force.
What are some factors that influence the strength of the magnetic field in an electromagnet?
length of the wire
direction of current flow
temperature of the conductor
current strength
number of turns in the coil
Which of the following is the best way to turn off the magnetic field of an electromagnet?
Lift the electromagnet farther away from the pile of cars.
Reverse the magnetic field by switching the poles of the core.
Turn off the magnetic field by switching off the electric current.
The magnetic field can be decreased by placing it close to another electromagnet.
What aspects of the winning design accounted for the strength of Group #2's electromagnet?
They used a 9-volt battery for more electrical energy.
More turns of wire around the core and the maximum voltage.
While driving down the road, this tiny hummingbird hit the windshield of a Maria's car. This is a clear case of Newton's third law of motion. The hummingbird hit the car and the car hit the hummingbird. Compare the force on both the hummingbird and the car's windshield (the hummingbird was unharmed).
The forces are equal and opposite.
The force on the windshield is greater.
The force on the hummingbird is greater.
The force of the hummingbird is less than that of the windshield.
Seat belts have been a requirement in vehicles for decades. They prevent injuries and reduce fatalities during car crashes that involve collisions while the car is in motion. Which of these concepts explains why seat belts are effective against injuries due to car collisions? Select THREE that apply.
A. Seat belts act as an unbalanced force against a body's inertia.
B. Seat belts prevent collisions between human bodies and the windshield.
C. Seat belts prevent an object in motion from continuing to move forward.
D. Seat belts increase the momentum of the vehicle but not the person within the vehicle.
E. Seat belts prevent an object in a circular motion will continue to move in a circular motion.
If you throw each hammer with the same amount of force, which hammer will move the shortest distance?
8 pounds
10 pounds
12 pounds
16 pounds
What could Timmy do, using just a D-cell battery, an iron nail, and a large roll of copper wire, to increase the strength of his electromagnet to pick up the maximum amount of paper clips?
Wrap more coils of copper wire around the iron nail.
Use a shorter iron nail.
Connect the battery for a shorter period of time.
Use fewer coils of copper wire around the nail.
How can the strength of the electromagnet be increased?
cut the iron nail in half to use as the core
only attach the battery to one end of the nail
increase the number of coils of copper wire he puts around the nail
decrease the number of coils of copper wire he puts around the nail
What advantage does this electromagnet have over a permanent magnet?
The electromagnet is easier to use.
The electromagnet is less dangerous.
The electromagnet can be turned off.
The electromagnet is cheaper to make.
How can the strength of this electromagnet be increased?
by using a different type of wire
by adding more coils around the nail
by making more connections to the battery
by replacing the current battery with a smaller one
A teacher asks a group of students to use a ruler to measure the amplitude of the wave shown below. Between which two points should the students measure?
Between the resting position and the crest
Between two consecutive crests
Between the crest and the trough
Between the resting position and the trough
Surgeons have been able to perform remote surgery using fiberoptic cables connected to robotic arms. This provides better healthcare to people in remote areas. What quality of fiberoptic cables led to this healthcare advance?
Fiberoptic cables are very inexpensive.
Fiberoptic cables can be easily placed.
Fiberoptic cables transmit data rapidly and with very little distortion.
Fiberoptic cables transmit sound waves, which travels fastest through solids.
Which statement accurately describes the difference between digital and analog information?
Digital information is continuous and smooth, while analog is discrete.
Digital information is represented by waves, while analog data is represented by light.
Digital information is represented by numerical values, while analog is represented by continuous waves.
Digital information is more at risk of being interrupted by interference than analog information.
