A
B
C
D
E
100
A student places two bar magnets next to each other on a table. Which of the following will the student most likely observe about the magnets?
- A Like poles repel
- B Opposite poles repel
- C Opposite poles retract
- D Like poles attract
A Like poles repel
100
Students are investigating with a magnet and several objects. What might the students have observed during the investigation?
- A Magnets repel glass marbles.
- B Magnets attract aluminum cans.
- C Magnets repel rubber erasers.
- D Magnets attract steel tacks.
D Magnets attract steel tacks.
100
A magnet is at one end of a large table and an iron nail is at the other. Which is the most likely reason the magnet is unable to attract the iron nail?
- A The magnet is not attracted to the iron in the nail.
- B The magnet is too far from the iron nail to cause attraction.
- C The magnetic field is weak, which keeps it from attracting the nail.
- D The magnet’s end needs to be turned so that the south pole is facing the nail.
B The magnet is too far from the iron nail to cause attraction.
100
Two magnets are placed on a table, Magnet P and Magnet R. As a student moves Magnet R closer to Magnet P, Magnet P moves away. Why does Magnet P move away?
- A Magnet P and Magnet R have the same charge.
- B Magnet P and Magnet R have opposite charges.
- C Magnet P has a charge, but Magnet R does not have a charge.
- D Magnet P does not have a charge, but Magnet R has a charge.
A Magnet P and Magnet R have the same charge.
100
A group of students hang a balloon with an electrical charge from the ceiling with a string. They bring another balloon near the first one. Predict what will happen when the balloons are brought closer together. The balloon on the string will-
- A begin to swing back and forth slowly.
- B move away if the charges are the same.
- C move toward the ceiling if the charges are the different.
- D begin to increase in size as the charges get closer.
B move away if the charges are the same.
200
An object with an electric charge will push on another object, if that object has which of the following properties?
- A No electric charge
- B An opposite electric charge
- C A completely metal body
- D The same electrical charge
D The same electrical charge
200
Electrical charges can result in all of the following EXCEPT-
- A an increase in volume.
- B a pulling force.
- C an electrical discharge.
- D a pushing force.
A an increase in volume.
200
This lamp will transform what type of energy to what other type of energy?
- A electrical to light
- B light to thermal
- C heat to sound
- D sound to light
A electrical to light
200
The illustration shows a complete electric circuit with a light bulb. Which forms of energy will the bulbs produce?
- A light and motion
- B sound and heat
- C heat and light
- D electrical and heat
C heat and light
200
An oven plugged into a wall does which of the following energy transformations?
- A Light to sound energy.
- B Thermal to light energy.
- C Electrical to thermal energy.
- D Electrical to sound energy.
C Electrical to thermal energy.
300
Tasha laid a piece of paper on top of a stereo speaker and then poured salt on the paper. What will happen when music is turned on?
- A The sound energy will make the salt move on the paper because of vibrations.
- B The sound energy from the music will change into a form of heat energy.
- C The sound energy will transform into light energy through the salt.
- D The sound energy from the music will make the salt magnetic.
A The sound energy will make the salt move on the paper because of vibrations.
300
How can light cause change?
- A Two magnets left outside in the sun will move towards each other.
- B The sun can increase temperatures to melt ice cream outside.
- C A lamp focused on a guitar can cause the strings to vibrate.
- D A solar toy car moving into a sun beam will stop moving.
B The sun can increase temperatures to melt ice cream outside.
300
Which choice best describes the flow of energy in a solar-powered lamp?
- A sun → solar panel → lamp → battery
- B solar panel → battery → sun → lamp
- C sun → solar panel → battery → lamp
- D battery → solar panel → sun → lamp
C sun → solar panel → battery → lamp
300
A card with writing on it is viewed through a jar with water in it. Part of the writing on the card appears to be changed. The change in appearance of the writing is the result of which of the following?
- A Light rays passing through the water are bent.
- B Light rays are absorbed by the glass of the jar.
- C Not all of the light that strikes the writing is reflected.
- D Light is not able to bounce off of the jar.
A Light rays passing through the water are bent.
300
An image is produced in a mirror because light from an object that strikes a mirror does which of the following?
- A Bounces off the mirror in straight lines
- B Is absorbed by the glass in the mirror
- C Adds heat energy to the mirror
- D Adds heat energy to the mirror
A Bounces off the mirror in straight lines
400
Why would a person wear dark-colored clothing on colder days?
- A The dark clothing refracts sunlight, so it keeps the person warmer.
- B The dark clothing reflects sunlight, so it keeps the person warmer.
- C The dark clothing absorbs sunlight, so it keeps the person warmer.
- D The dark clothing dissolves sunlight, so it keeps the person warmer.
C The dark clothing absorbs sunlight, so it keeps the person warmer.
400
A student places a pencil in a glass of water and observes that the pencil appears to be broken. Which of these provides the best explanation for why the pencil appears broken?
- A The pencil absorbs all the light rays that hit it.
- B Water reflects light rays away from the pencil.
- C Light rays are bent by the water in the glass.
- D The surface of the water reflects light rays.
C Light rays are bent by the water in the glass.
400
Jan moved a magnet over an open box of items. The magnet was not able to move any of the items. What situation could cause this to happen?
- A The items were made of plastic.
- B The items were too big to move.
- C The items were made of iron.
- D The items were too small to move.
A The items were made of plastic.
400
How does a balloon rubbed on a person’s hair cause the hair to rise and pull away from the person’s head?
- A The two objects are oppositely charged and attracted to each other.
- B The two objects are similarly charged and attracted to each other.
- C The two objects are oppositely charged and repel each other.
- D The two objects are similarly charged and repel each other.
A The two objects are oppositely charged and attracted to each other.
400
Which two object would a magnet attract? (2 Answers)
- A Water
- B Iron Filings
- C Wax Candle
- D Iron door hinge
B Iron Filings
D Iron door hinge
500
What direction does the needle of a compass always point to?
- A South
- B East
- C North
- D West
C North
500
What gives the Earth a magnetic field?
- A Water
- B Metal
- C Plants
- D Rocks
B Metal
500
How many poles does the Earth have?
- A One
- B Two
- C Three
- D Four
B Two
500
What does the magnetic field of the Earth do to the needle of a compass?
- A Pushes it away
- B Pulls it towards the South Pole
- C Pulls it towards the magnetic North Pole
- D Changes its color
C Pulls it towards the magnetic North Pole
500
Which type of energy would a battery be?
A - light
B - electrical
C - magnetic
D - Sound
B - electrical