Light
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.
What action affects the length of day and night at any location on Earth?
A. Earth′s wind patterns
B. Earth′s rotation on its axis
C. Earth′s distance from the moon
D. Earth′s revolution around the sun
B. Earth′s rotation on its axis
A lizard sits on a rock in the sunlight. Which form of energy warms the
lizard?
A. electrical
B. heat
C. magnetic
D. sound
B. heat
Why is steel better than wood when constructing a building?
A. because it conducts electricity
B. because it is inexpensive
C. because it is magnetic
D. because it is strong
D. because it is strong
Which object would be attracted to a magnet?
A. foil wrap
B. steel rod
C. brass ring
D. copper wire
B. steel rod
Why would a person wear a white shirt, instead of a black shirt, on a hot, sunny day?
A. The white shirt would refract sunlight, keeping the person cooler.
B. The white shirt would reflect sunlight, keeping the person cooler.
C. The white shirt would absorb sunlight, keeping the person cooler.
D. The white shirt would reverse sunlight, keeping the person cooler.
B. The white shirt would reflect sunlight, keeping the person cooler.
Why does the sun change position in the sky throughout the day?
A. because the sun’s position in the galaxy changes
B. because the moon rotates around Earth
C. because of Earth spinning on its axis
D. because of Earth’s tilt on its axis
B. because the moon rotates around Earth
What happens when a drumstick strikes a drum?
A. Vibrations create heat.
B. Vibrations create light.
C. Vibrations create sound.
D. Vibrations create electricity.
C. Vibrations create sound.
Mason wants to wrap the handle of a pan in a material that will keep his hand protected when he takes the pan off the hot stove. Which material would be a good choice?
A. glass
B. paper
C. rubber
D. silver
C. rubber
Which item is most likely going to move when a magnet is passed over it?
A. a plastic chip
B. a steel marble
C. a wooden chess piece
D. an aluminum foil square
B. a steel marble
How does light interact with the reflectors on a bicycle?
A. The reflectors bounce light back towards its source.
B. The reflectors bend light and send it back to its source.
C. The reflectors absorb light and send some back towards its source
D. The reflectors produce their own special light only when objects are
near.
A. The reflectors bounce light back towards its source.
Why do different parts of Earth receive different amounts of sunlight each day?
A. Earth′s axis is tilted.
B. Earth′s gravity is weak.
C. Earth′s revolution speed increases during each day.
D. Earth′s distance from the sun changes during each day.
A. Earth′s axis is tilted.
Tasha laid a piece of paper on top of a stereo speaker and then poured salt on the paper. What will happen when the 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.
Why are electrical cords coated with rubber?
A. Rubber conducts electricity.
B. Rubber is attracted to a magnet.
C. Rubber does not conduct electricity.
D. Rubber is not attracted to a magnet.
C. Rubber does not conduct electricity.
Kevin holds the north pole of a magnet to the north pole of a second magnet. What will happen to the magnets?
A. The magnets will spin around each other.
B. The magnets will attract each other.
C. The magnets will repel each other.
D. The magnets will not move.
C. The magnets will repel each other.
Which item will absorb the most visible light?
A. diamond
B. glass
C. prism
D. wood
D. wood
Why is the same side of the moon always seen from Earth?
A. because the moon rotates on its axis at twice the rate that it orbits Earth
B. because the moon rotates on its axis at the same rate that it orbits Earth
C. because the moon rotates on its axis at a slower rate than it orbits Earth
D. because the moon rotates on its axis at half the rate that it orbits Earth
B. because the moon rotates on its axis at the same rate that it orbits Earth
Which change of energy occurs when lightning strikes a tree?
A. sound energy → electrical energy
B. light energy → magnetic energy
C. electrical energy → heat energy
D. heat energy → sound energy
C. electrical energy → heat energy
Why are diamonds used to cut other materials?
A. They are overly flexible.
B. They are extremely hard.
C. They are able to resist fire.
D. They are attracted to magnets.
B. They are extremely hard.
Christie rubbed a balloon with a piece of wool. She held the balloon over some small pieces of paper on a table. What happened to the paper?
A. The paper pulled the balloon toward the table.
B. The paper scattered all over the table.
C. The paper moved toward the balloon.
D. The paper did not move.
C. The paper moved toward the balloon.
Which object best allows light to continue traveling in a straight path with little refraction or absorption?
A. metal pan
B. plastic plate
C. wool blanket
D. glass window
D. glass window
During the new moon phase, where is the sun located in comparison to the moon when looking from Earth?
A. above the moon
B. below the moon
C. behind the moon
D. in front of the moon
C. behind the moon
Which energy occurs when a bee is buzzing?
A. electric
B. heat
C. light
D. sound
D. sound
Why does a cube built of plastic straws collapse when a heavy book is placed on top, but a cube built of metal rods does not?
A. Metal conducts more electricity than plastic.
B. Metal conducts more heat than plastic.
C. Metal is more flexible than plastic.
D. Metal is stronger than plastic.
D. Metal is stronger than plastic.
When a radio is turned off, which situation is most likely happening to the electrical charges?
A. They are spinning clockwise.
B. They are vibrating up and down.
C. They become still and motionless.
D. They are spinning counter-clockwise.
C. They become still and motionless.