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WorksheetsPMA 2 Review
Total questions: 41
Worksheet time: 22mins
Fireworks are popular during celebrations. They light up the night sky and sometimes shake the ground with their explosions. The explosion noises are an example of what type of energy?
electrical energy
light energy
mechanical energy
sound energy
Some mornings Marcie rides in her mother’s car to school, and other mornings she rides in her father’s car. Marcie noticed that when she rides in her mother’s car, it takes less time to travel the same distance as when she is in her father’s car. Based on the information above, which of the following statements is true?
Her mother's car is traveling at a greater speed than her father's car.
Her father's car is traveling at a greater speed than her mother's car.
Both cars are traveling at the same speed since they travel the same distance.
Both cars accelerate at the same rate, but her mother's car has a greater mass.
The chart shows the results of an investigation.
What can you conclude from the information in the chart?
Sand and marbles are conductors
Tap water, saltwater, and aluminum foil are conductors.
The lightbulb did light when an insulator was placed in the electrical circuit.
The lightbulb did not light when a conductor was placed in the electrical circuit.
Russell is on a camping trip with his family. To warm their food, they put it in a bowl and place the bowl on a rack over the fire.
Which material should the bowl be made from to conduct the heat from the fire most effectively to warm the food?
wood
plastic
rubber
aluminum
Which energy transformation occurs when a fan is plugged into a wall?
chemical energy into electrical energy
electrical energy into chemical energy
mechanical energy into electrical energy
electrical energy into mechanical energy
You rub two balloons on your hair on a dry day. Your hair is attracted to both balloons. Then, you bring the balloons near one another.
How would you describe what happens to the balloons?
They repel one another.
They attract one another.
They neither attract nor repel one another.
Opposite charges make one balloon become larger and one become smaller.
Which of the following examples main energy conversion is when electrical energy is converted to heat energy?
Turning on a computer
Turning on a radio
Ironing clothes
Using a flashlight
The most likely reason the bulb does not light is because -
. Felipe and Marsha were studying friction and decided to do an experiment. They place four equally sized blocks made of different materials on an elevated plastic tray. They watched the blocks move down the tray. Which block would experience the least amount of friction as it moved down the tray?
ice block
sponge block
sandpaper block
plastic block
What effect will one positive charge have on another positive charge?
They attract each other.
They repel each other.
You pull clothes out of the dryer. You notice a sock is stuck to a shirt. What does this most likely tell you about the charges of the sock and shirt?
They have the same type of charge.
They both have positive charges.
They both have negative charges.
They have opposite charges.
Janiyah is pulling a rope to the left. Cyn'terrea is pulling the rope to the right. The rope stays in the same position. Which of these best explains why the rope does not move?
the two forces are acting in the same direction.
the two forces are equal and balance each other out
two forces cannot act on one object at the same time
the force to the left is greater than the force to the right.
1. A student wants to arrange two bar magnets so that they repel each other. Which arrangement shows the best arrangement for the magnets to repel each other?
The pitch of a sound depends on how fast an object vibrates. The faster an object vibrates, the higher its pitch. As an object vibrates, it sends sound waves through the air. Low-pitched sounds have waves that are farther apart. The picture below shows sound waves made by two different objects that are vibrating.
What can you conclude about these two sounds?
Sound 1 is louder.
Sound 2 is louder.
Sound 1 has a lower pitch.
Sound 2 has a lower pitch.
How does the mass of the shopping cart affect the amount of force needed to push the cart?
A)The greater the mass of the cart, the faster it will travel when you push it.
b. The lesser the mass of the cart, the less force required to push it.
c)The greater the mass of the cart, the less force required to push it.
A)The lesser the mass of the cart, the more force required to push it.
Jose is a mechanic at an automobile repair shop. He spilled a can of oil on the concrete floor. The spilled oil will reduce which force?
friction
gravity
centripetal
magnetism
Tameika’s mom parked their car on the road. Tameika ran from the car to the house. Which statement is true about Tameika’s movement?
Tameika changed direction but did not change position.
Tameika’s speed was the same throughout the movement.
Tameika changed position and may have changed direction.
Tameika’s position was the same throughout the movement.
An object moving along a surface suddenly increases speed. What can cause this to happen?
it is moved by balanced forces.
it is moved by two opposite forces.
it is moved by an unbalanced force.
it moves on its own.
1. Which statement best describes what must happen in order for a person to lift an object?
a. The force of gravity must be greater than the mass of the object.
b. The mass of the object must be greater than the force of gravity.
c. The force of gravity must be greater than the upward pull or push on the object.
d. The upward pull or push on the object must be greater than the force of gravity
A student places one magnet above another magnet, as shown below.
Why does the top magnet appear to float above the bottom magnet?
a. The magnets are made of different material.
a. The like poles (N and N, S and S) of the magnets repel each other.
The opposite poles (N and S) of the magnets repel each other
The magnets have a different gravitational attraction
While playing at the park, Katie and her sister take turns going down the slide and playing on the swings.
Which of the following is an example of change that is caused by applying energy?
Katie continues to swing back and forth without doing anything.
When Katie pushes her sister on the swings, the swing moves faster.
Katie sits at the top of the slide and waits for her sister to finish her turn.
When Katie stops pushing her sister on the swings, the swing eventually comes to a stop.
An electrician wears rubber gloves for protection when working on the wiring in a house. What is the purpose of the rubber gloves?
to produce electricity
to insulate the electrician
to keep the electrician dry
to create an electrical circuit
After carrying out a scientific investigation, Dr. Jones thinks she has just discovered new information about gravity. How should she best communicate her findings with other scientists?
Post her discovery on the internet as fact.
Try to find new information on another topic.
Publish her discovery for other scientists to test.
Call her friends and tell them about the discovery.
The picture shows what happens when light shines on a tank of water.
What property of light does this picture show?
Light only bends in water.
Light gets brighter the farther it travels.
Light gets brighter when it reflects off of smooth surfaces.
When light travels from one substance to another, it bends.
A toy car rolling along different surfaces will experience different amounts of friction. The toy car would encounter the most friction when rolling on which of the following surfaces?
a piece of carpet
a sheet of glass
a smooth wooden board
a piece of construction paper
Julio and Tammy are moving a dresser. They are arguing about which direction to move it. Julio is pushing the dresser with a force of 5 Newtons towards Tammy. Tammy is pushing the dresser towards Julio with a force of 10 Newtons. What happens to the dresser due to the forces applied?
The dresser does not move.
The dresser moves towards Julio.
The dresser moves towards Tammy.
The dresser moves towards Tammy, then back towards Julio.
How does removing the books affect the motion of the book case?
the mass is decreased, making the bookcase move faster
the gravity is increased, making the bookcase move slower
the friction is increased, making the bookshelf move slower
the mechanical energy is decreased, making the bookcase move faster.
When the switch is closed the buzzer will sound because -
The force of gravity appears to attract all objects equally, regardless of mass. Which of the following demonstrates this idea?
Two cars traveling along the road at the same speed in opposite directions.
A rubber ball will bounce much higher than a wooden ball, even if they weigh the same.
Magnets can both repel and attract each other, depending on how they come into contact.
A bowling ball and a marble will fall to the ground at the same rate when someone drops them.
A teacher writes the following note on a student’s experimental design: “You did not identify a control group.” Why is it important to identify a control group?
A scientist must form a prediction to see if their results are valid.
A scientist must know which variable to use for making a model.
A scientist must observe data to make a conclusion based on evidence.
A scientist must know what normally occurs so they can compare this to what they are testing.
David and Angelo were moving a bookshelf across the carpet in their classroom. Even though they pushed as hard as they could, the bookshelf would only move a few centimeters at a time. Which of the following best explains what happened as they tried to push the bookshelf?
The force of gravity opposed the motion of the bookshelf.
The force of friction opposed the motion of the bookshelf.
When they tried to push the bookshelf, air resistance acted against them.
When they pushed the bookshelf, the bookshelf pushed back with an equal and opposite force.
During summer break, Cathy spent many days playing different sports. In one week, she went bowling, played soccer, softball, and beach volleyball. Cathy felt that moving the bowling ball required the most force. Why would it require more force?
Bowling is an indoor sport.
It has the most mass.
The bowling ball is all black, while the other balls have white on them.
Cathy has to put her fingers in the bowling ball.
Philip loads three books onto a cart and pushes it halfway down a track. At this point, he loads six more books onto the cart. What must Philip do when pushing the cart to the end of the track?
Use less force.
Use more force.
Use the same amount of force.
Use no force.
Which is true about how a charged object interacts with an uncharged object?
The objects will attract.
The objects will repel.
The charged object becomes uncharged.
The uncharged object will move away from the charged object.
Ben put different masses on each of the carts. He then launched each cart from the same starting point using the same amount of force. Ben measured how far each cart rolled from the starting point. How will the force of the launch affect the carts?
Cart 3 will travel the longest distance.
Cart 1 will travel the shortest distance.
Cart 3 will have the least change in its motion.
Cart 1 will have the greatest change in its motion.
Ryder writes a summary of a lesson about heat energy. Which statement should Ryder include in his summary?
Objects that give off heat always give off light energy.
An object’s temperature is not affected by heat transfer.
Heat always moves from where it is cooler to where it is warmer.
Heat always moves from where it is warmer to where it is cooler.
