Energy
Force &
Motion
Motion
Matter
Conductors & Insulators
Currents, Magnets, & Circuits
100
Matthew is bowling. The bowling ball is thrown down the lane towards the pins.
What is happening?
A) Energy from Matthew's arm is transferred to the pins.
B) Energy is transferred from Matthew's arm to the ball.
C) Friction from the floor speeds the ball up.
D) Gravity pulls the ball toward the pins.
B) Energy is transferred from Matthew's arm to the ball.
100
Motion is defined as a change in an object's position when compared to other objects around it. Mary Ann was watching a slug crawl across the driveway. She saw that a small rock was beside the slug when she first started watching it.
Since a slug moves so slowly, how does Mary Ann know that the slug is actually in motion?
A) She can tell the slug is moving because time has passed.
B) She can tell the slug is moving because she set her watch.
C) She can tell the slug is moving by never taking her eyes off of the slug.
D) She can tell the slug is moving by comparing the change in distance between the rock and the slug.
D) She can tell the slug is moving by comparing the change in distance between the rock and the slug.
100
Look up at the sky on this sunny morning! Take a big breath. You are breathing in oxygen and nitrogen, gases that are in the air. Why can't you see these gases?
A) Atoms are so small you cannot see them without special magnification.
B) Sometimes, you can see them; it depends on the temperature of the air.
C) Atoms of gas are colorless and odorless, so you cannot tell they are there.
D) The oxygen and nitrogen in the air are gases and you cannot see gases, only solids and liquids.
A) Atoms are so small you cannot see them without special magnification.
100
Which of these is an example of an insulator?
A) nail
B) metal staple
C) crayon
D) paper clip
C) crayon
100
The image shows an electromagnet. If you wanted to make the magnet stronger, what could you do?
A) Use a smaller battery and nail.
B) Use two batteries instead of one.
C) Use fewer coils of wire around the nail.
D) spread the coils of wire apart on the nail.
B) Use two batteries instead of one.
200
Javion got home before his mom and started dinner for his family.
Which type of energy is being used to cook the food in the pot on the stove?
A) thermal energy
B) radiant energy
C) chemical energy
D) mechanical energy
A) thermal energy
200
Rebecca is playing bean bag toss with her friends. Rebecca is getting increasingly frustrated because she has not scored any points yet. In this game, Rebecca has to stand behind the throwing line and throw five different bean bags into the hole on the wooden board to get points. The image below shows Rebecca’s first four tosses.
What should Rebecca do to have a better chance of getting some points by getting her next bean bag into the hole without breaking the rules?
A) She should throw with less force.
B) She should throw with more force.
C) She should step closer to the wooden board.
D) She should take out beans from her next bean bag.
B) She should throw with more force.
200
When looking at a glass of salt water, the dissolved salt cannot be seen. When boiling salt water, the water evaporates and salt is left behind. What does this reveal about the dissolved salt?
A) Matter can only be made up of gases or liquids.
B) Matter is made of particles that are too small to see.
C) Matter can only be seen if its temperature is increased.
D) Matter is always made up of two parts, and one cannot be seen.
B) Matter is made of particles that are too small to see.
200
What is an example of a conductor?
A) paper
B) plastic straw
C) metal staple
D) crayon
C) metal staple
200
Sal and Marie were experimenting with bar magnets in science class, picking up chains of paper clips. Where should they expect the magnetic force of the bar magnet to be the strongest and pick up the most paper clips?
A) at both Poles
B) at the South Pole
C) at the North Pole
D) in the center of the bar magnet
A) at both Poles
300
The football team has a big game to play on Friday night. On Thursday, they meet for a team dinner with healthy food. They know that eating a healthy meal will help them to perform better in their game. What kind of energy will they be using during the game?
A) radiant energy
B) thermal energy
C) chemical energy
D) electrical energy
C) chemical energy
300
What conclusion about motion can be drawn from the picture?
A) The two people are exerting equal force, and no movement is happening. The force of push is balanced.
B) The two people are not exerting equal force, and no movement is happening. The force of push is unbalanced.
C) The two people are not exerting equal force, and one person is moving the other. The force of push is unbalanced.
D) The two people are not exerting equal force, and one person is moving the other. The force of the push is balanced.
A) The two people are exerting equal force, and no movement is happening. The force of push is balanced.
300
In which of these mixtures can the two separate parts be identified just by looking at it?
A) oil mixed with water
B) salt dissolved in water
C) sugar dissolved in water
D) vinegar mixed with water
A) oil mixed with water
300
Dry air, cardboard, glass, rubber, and wood can be classified as-
A) insulators because free electron flow is hindered by the structure of the material.
B) conductors because electrons can move freely from one atom to another creating a current.
C) superconductors because they provide no resistance to electron flow through the material.
D) semiconductors because electron movement is dependent on the conditions - such as temperature and voltage.
A) insulators because free electron flow is hindered by the structure of the material.
300
How is an electromagnet like a bar magnet?
A) They are both made of wire.
B) They both need electricity to work.
C) They are both strong, permanent magnets.
D) They both have a North pole and an South pole.
D) They both have a North pole and an South pole.
400
The fan blades turn, providing a cool breeze on a hot day.
____________ energy is used to create mechanical energy to turn the fan blades.
A) Convection
B) Electrical
C) Solar
D) Thermal
B) Electrical
400
Landon uses a golf ball to demonstrate how energy can cause changes. Which of the following actions would NOT demonstrate a change caused by Landon applying energy to the ball?
A) She carries the ball to the tee.
B) She holds the ball in place on the tee.
C) She swings the club and sends the ball flying.
D) She gently taps the ball into the hole.
B) She holds the ball in place on the tee.
400
Matter is made of particles that are too small to see, but can be detected in a variety of ways.
Which sentence helps to prove that matter exists inside of a basketball?
A) When air is added to the ball, it expands.
B) When the ball is placed on a hill, it rolls.
C) When the ball is dropped, it falls to the ground.
D) When the ball is left in sunlight, it becomes hot.
A) When air is added to the ball, it expands.
400
Aluminum foil, cast iron pans, copper pipes, graphite, and sea water can be classified as-
A) insulators because free electron flow is hindered by the structure of the material.
B) conductors because electrons can move freely from one atom to another creating a current.
C) superconductors because they provide no resistance to electron flow through the material.
D) semiconductors because electron movement is dependent on the conditions - such as temperature and voltage.
B) conductors because electrons can move freely from one atom to another creating a current.
400
You are learning about energy transformations in science class. Sally's group made this electromagnet using a battery and some wire. Describe the energy transformation you see here.
A) electrical to magnetic
B) magnetic to electrical
C) mechanical to magnetic
D) electrical to chemical
A) electrical to magnetic
500
Companies are burning coal through combustion to produce electricity. The amount of electrical energy produced is less than the amount of stored potential energy found in coal. Which best explains this observation?
A) There is no way to know the amount of energy in coal.
B) Some of the potential energy in the coal is converted into heat energy.
C) As turbines and generators in the power plant convert potential energy to kinetic, some of the energy is lost.
D) Due to the intense heat during combustion, some some potential energy is destroyed before being converted to kinetic energy.
B) Some of the potential energy in the coal is converted into heat energy.
500
Chris is helping his parents move boxes into their new house. He is pushing a box of towels off the truck using a metal ramp, across the concrete sidewalk, into the front door, down the carpeted hallway, and onto the tile floored bathroom. He noticed that it was harder to push the box on the concrete sidewalk, but easier on the carpet and tile.
Why was it easier on the carpet or tile?
A) It was easier because the smooth surface creates gravity.
B) It was easier because the smooth surface creates no friction.
C) It was easier because the smooth surface created less friction.
D) It was easier because the smooth surface creates more friction.
C) It was easier because the smooth surface created less friction.
500
Mixing substances can cause physical and chemical changes. Sometimes, mixing substances results in the creation of new substances. Which of these examples provides the best evidence of a new substance being made?
A) Three substances are mixed in a sealed plastic bag. The reaction results in the mixture becoming warm, expanding, and changing color.
B) Two substances are stirred together in a beaker and left untouched for one day. The substances separated into two layers in the beaker.
C) A packet of powdered drink mix, one cup of sugar, and two quarts of water are mixed in a pitcher. The stirring causes the water to turn purple.
D) A bottle of aspirin pills are crushed into powder and mixed with sand in a plastic container. Water is added to the mixture to dissolve the aspirin.
A) Three substances are mixed in a sealed plastic bag. The reaction results in the mixture becoming warm, expanding, and changing color.
500
Why is the end of the headphones that plugs into the device not coated in plastic?
A) The metal costs less.
B) The plastic would melt.
C) The plastic would break too easily.
D) The metal is a better conductor of electricity.
D) The metal is a better conductor of electricity.
500
Ron is dreading setting up the Christmas tree because the lights are always a hassle. There is always at least one strand of lights that has a bulb out that prevents the string from lighting because the broken bulb breaks the circuit. He must test all the bulbs to determine which bulb is damaged and replace it before the light strand will work properly. If his lights were wired as a ________ circuit instead of a ________ circuit he could avoid this headache.
A) parallel, series
B) sequel, parallel
C) multiple, parallel
D) progression, series
A) parallel, series