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17 questions
Which of these is an example of back-and-forth motion?
a bowling ball rolling down a lane
a pinwheel spinning around
a child moving on a swing
a top turning
If you kick a soccer ball forward, what kind of motion will it move with and why?
Motion in a line, because gravity pulls it down.
Circular motion, because gravity pushes it back.
Back-and-forth motion, because the ball rolls as it moves.
Motion in a line, because the ball moves in one direction away from your foot.
To predict how an object will move means to use what you know to:
change the direction of the object.
change the position of the object.
learn about the object from what happened in the past.
tell what might happen to the object in the future.
You and your friend spin a jump rope in a circle. Predict what will happen if you keep spinning the jump rope.
The rope will stop moving.
The rope will keep moving in a circle.
The rope will stop moving in a pattern.
The rope will change directions.
Look at the picture. Describe the pattern of motion of the jump rope as the girl plays jump rope.
Back and forth
Circular
Straight line
Curved line
In the picture, are the forces on the girl balanced or unbalanced as she plays jump rope? How can you tell?
Balanced; the girl is standing still
Balanced; the girl is moving in a circle
Unbalanced: the girl's motion keeps changing
Unbalanced: the girl is standing still
In the picture, what force causes the girl to move upward?
Gravity
The jump rope
The girl pushing with her legs
The girls swinging the rope
In the picture, what force causes the girl to move downward?
Gravity
The jump rope
The girl pushing with her legs
The girls swinging the rope
Emi and Ana go to a fair and go on several rides shown here. The arrows show the direction of movement. Which pictures show rides that can move in a forward motion? Use evidence in the photos.
Pictures 1 and 2
Pictures 2 and 3
Pictures 1 and 3
Pictures 2 and 4
Ellie’s mother receives a clock as a present, and Ellie helps her hang it in the living room. When the clock is turned on, Ellie’s mother says it will move in different ways.
Which part or parts of the grandfather clock should Ellie expect to move in a back-and-forth motion?
A only
C only
A and B
B and C
Dante is on the school playground. Predict which playground object will move in a circle when Dante pushes it. Is the motion balanced or unbalanced?
Picture 1; balanced
Picture 2; unbalanced
Picture 3; unbalanced
Picture 4; balanced
Carol and her little brother José go to the park to ride the swings. What keeps José and Carol’s swing moving back and forth?
The poles pull down on the swing, bringing the swing backward.
The swing’s chains pull down on the swing, bringing it forward.
Gravity pulls down on the swing, and the chain pulls it backward.
The chain pulls down on the swing, and gravity pulls it backward.
Erik wants to find if dropping a basketball ball from a different height changes how far it will bounce. He measures the ball after each drop, and records the data in the table pictured.
2 cm
4 cm
6 cm
10 cm
Erik wants to use his observations of the basketball to be a better basketball player. Which of the following could Erik have learned during his experiment for playing basketball?
The basketball will bounce higher if he bounces it from a lower height.
The basketball will bounce lower if he bounces it from a higher height.
The basketball will bounce higher if he bounces it from a higher height.
The basketball will bounce at the same height no matter what height he drops it from.
Finn’s grandfather gets a windmill on his farm. Finn wants to know what makes the windmill move. His grandfather uses the diagram to explain it to him.
Which diagram shows how the wind will move the windmill?
Is the force of the windmill balanced or unbalanced?
balanced
unbalanced
Which of the following is the pattern of motion for the windmill?
Circular
Back and forth
Straight line
Zig-zag line
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