build
Which material is BEST for keeping water out of a backpack?
A. Cotton
B. Tissue paper
C. Plastic
D. Cardboard
C. Plastic
A student opens a drawer by moving it toward herself.
Which force is she using?
A. Push
B. Pull
C. Gravity
D. Magnetism
B. Pull
Sam spins a toy top on a table. After a few seconds, the top slows down and falls over.
Which force pulls the spinning top toward the table when it falls?
A. A push
B. Gravity
C. Magnetism
D. Friction
B. Gravity
A student is building a small bridge using thin wooden sticks. The bridge bends when toy cars are placed on it.
The student decides to combine several sticks using strong glue.
Which statement BEST explains why combining these materials improves the bridge?
A. The glue makes the sticks lighter so they can float.
B. The glue changes the wooden sticks into a different state of matter.
C. Combining the sticks increases the strength and rigidity of the bridge.
D. Combining the sticks creates a magnetic force that holds the cars.
C. Combining the sticks increases the strength and rigidity of the bridge.
A student combines several thin sticks with glue to make a stronger bridge.
Combining the sticks increases the bridge's ________.
A. Strength
B. Color
C. Magnetism
D. Temperature
A. Strength
A push or pull can change an object's position and ________.
Word Bank:
A. Color
B. Shape
C. Motion
D. Material
C. Motion
A magnet can attract a steel paperclip without ________ it.
A. Touching
B. Breaking
C. Heating
D. Bending
A. Touching
A student places a steel nail, plastic button, and wooden cube on a table. A magnet is moved near each object.
Which statement BEST compares the forces of gravity and magnetism acting on these objects?
A. Gravity only pulls on the steel nail because it has the most mass.
B. Magnetism attracts all three objects, but gravity only pulls on the wooden cube.
C. Gravity and magnetism only act when objects touch each other.
D. Magnetism attracts the steel nail, while gravity pulls on all three objects.
D. Magnetism attracts the steel nail, while gravity pulls on all three objects.
How could you use a force to stop a soccer ball rolling toward you?
A. Push the ball in the same direction it is moving.
B. Push against the ball with your foot.
C. Move your foot away from the ball.
D. Wave a magnet near the ball.
B. Push against the ball with your foot.
Which of the following is an example of a noncontact force?
Select TWO correct answers.
A. A person throwing a ball
B. A magnet pulling a paperclip
C. A child pulling a wagon
D. A person catching a ball
E. An apple falling to the ground
B. A magnet pulling a paperclip
E. An apple falling to the ground
A student places a steel paperclip, wooden block, and plastic spoon on a table.
Which statement BEST compares gravity and magnetism?
A. Gravity only pulls on the paperclip.
B. Magnetism pulls on all three objects.
C. Gravity and magnetism only work when objects touch.
D. Gravity pulls on all three objects, but magnetism attracts the steel paperclip.
D. Gravity pulls on all three objects, but magnetism attracts the steel paperclip.
If the pendulum is released from position 3, the ball will –
A. not travel and remain in the same position
B. travel the same distance as the other two positions
C. travel a farther distance than the other two positions
D. travel a shorter distance than the other two positions
D. travel a shorter distance than the other two positions
A student builds a tower using thin straws. The tower bends when blocks are added.
Which change would BEST make the tower stronger?
A. Use fewer straws.
B. Tape several straws together.
C. Replace the straws with tissue paper.
D. Make the tower taller.
B. Tape several straws together.
A soccer ball rolls toward Pablo. He places his foot against the moving ball.
What will MOST likely happen?
A. The ball will speed up.
B. The ball will slow down and stop.
C. The ball will become heavier.
D. The ball will begin floating.
B. The ball will slow down and stop.
During recess, Mia spins a toy top on the ground. The top spins quickly, then slows down and tips over.
What BEST explains why the top falls to the ground?
A. A magnetic force attracts the top.
B. A push makes the top fall.
C. Gravity pulls the top downward.
D. Friction pulls the top toward Earth.
C. Gravity pulls the top downward.
An engineer is making a tablet cover. It must be strong to protect the tablet and soft to prevent scratches.
Materials:
Metal: Hard and strong
Foam: Soft and flexible
Tissue paper: Thin and weak
Plastic wrap: Thin and flexible
Which TWO materials are BEST for the tablet cover?
A. Tissue paper and plastic wrap
B. Metal and foam
C. Foam and tissue paper
D. Plastic wrap and metal
B. Metal and foam
An engineer is building a shelter for small animals. The shelter needs a strong frame and a waterproof roof.
Which combination of materials would BEST meet these needs?
A. Cotton for the frame and cardboard for the roof because both are lightweight.
B. Foam for the frame and tissue paper for the roof because both are soft.
C. Plastic wrap for the frame and wood for the roof because both are flexible.
D. Wooden sticks for the frame and plastic sheets for the roof because wood is rigid and plastic stops water.
D. Wooden sticks for the frame and plastic sheets for the roof because wood is rigid and plastic stops water.
Two students investigate how the starting position of a pendulum affects its motion.
Trial 1: The pendulum is pulled back 5 cm.
Trial 2: The pendulum is pulled back 15 cm.
Both are released without an extra push.
Which statement BEST predicts the results?
A. Trial 1 will swing farther because it starts closer to the center.
B. Trial 2 will swing farther because it is pulled back a greater distance.
C. Both will swing the same distance because gravity acts on both.
D. Neither will move because no one pushes them.
B. Trial 2 will swing farther because it is pulled back a greater distance.
A spinning top starts out moving fast. Friction causes the spinning top to slow down
until it finally falls over and stops moving. What other force causes the spinning top
to fall over?
A. The force of a push
B. The force of gravity
C. The force of magnetism
D. The force of motion
B. The force of gravity
A student tests a pendulum by pulling the ball back different distances.
What will MOST likely happen when the ball is released in Trial 3?
A. The ball will not move.
B. The ball will swing the same distance as the other trials.
C. The ball will swing farther than the other trials.
D. The ball will swing a shorter distance than the other trials.
D. The ball will swing a shorter distance than the other trials.