Force and Motion Daily Grade

1. David and his friend Delia arrive at the playground. David and his friend are so much alike. They are the same age, the same height, and they even weigh the same. They can't wait to play on the new seesaw at the playground. David hops onto one side and Delia hops onto the other. What will most likely happen to David and Delia on the seesaw?

• David and Delia will not move because their forces are balanced.
• David and Delia will not move because their forces are unbalanced
• David will move up, and Delia will move down because their forces are unbalanced.
• David will move down, and Delia will move up because their forces are unbalanced.

2. A fourth grade class with 24 students is playing tug of war with a rope against their teacher. Which of the following BEST describes the expected outcome?

• The 24 students and the teacher will result in a tie since their forces are balanced.
• The results cannot be unpredicted since balanced and unbalanced forces are random.
• The teacher will win since the forces are balanced because the teacher will have more force pulling than all 24 students.
• The 24 students will win since the forces are unbalanced because they will have more force pulling on their side compared to the one teacher.

3. Which shows a unbalanced force?

• Books sitting on a table
• Cat sleeping on a couch
• Pictures hung on the wall
• Girl Kicks a soccer ball (soccer ball is in motion)

4. Students want to investigate how a marble can demonstrate a balanced force. Which situation below would BEST demonstrate a balanced force?

• Student 1 sets up a ramp with a book and rolls a marble down the book.
• Student 2 pushes a marble along a smooth surface, and the marble rolls along the surface.
• Student 3 blows on a marble with a straw, but the marble does not move.
• Student 4 pushes a marble across carpet, and the marble slowly moves along the surface.

• Investigations 1 and 3 demonstrate balanced forces since there was no movement, whereas investigations 2 and 4 demonstrate unbalanced forces since students caused objects to move.
• Investigations 1 and 3 demonstrate unbalanced forces since there was no movement, whereas investigations 2 and 4 demonstrate balanced forces since students caused objects to move.
• All the investigations demonstrate balanced forces since there were students and objects involved in each investigation.
• All the investigations demonstrate unbalanced forces since all of the investigations involved moving objects.

• The ball rolling on the tile shows an unbalanced force since there was less friction than when the ball rolled on the carpet.
• The ball rolling on the carpet shows an unbalanced force since there was less friction than when the ball rolled on the tile.
• The ball rolling on the tile shows a balanced force since there was less friction than when the ball rolled on the carpet.
• The ball rolling on the carpet shows a balanced force since there was less friction than when the ball rolled on the tile.

7

• The roots grow downward because the plants are hanging from a hook
• The roots grow downward because they are affected by the force of gravity.
• The roots grow downward because they are trying to get to reach the air below the pots.
• The roots grow downward because the plants are up in the air and the roots are trying to get to the ground.

8. A student is trying to move boxes of books. All of the books are the same size and weight. One box has 2 books and another box has 10 books. What evidence could you use to support the claim that you need more force to move the box with 10 books?

• It will take more force because all of the books are the same size.
• It will take more force because all of the books weigh the same.
• It will take more force because the box with 10 books weighs less.
• It will take more force because the box with 10 books weighs more.

9. Andrew does the same experiment with four different cars. He measures the mass of each car and then records the time it takes each to travel 60 centimeters to the edge of the desk when given an equal push. He creates a data table organizing his findings. Which table most likely represents Andrew’s findings?

• The correct table for Andrew’s experiment is Table A since it shows the least amount of mass taking the most amount of time because gravity and friction will slow the cars with less mass more than the car with greater mass.
• The correct table for Andrew’s experiment is Table B since it shows the least amount of mass taking the least amount of time because gravity and friction will slow the cars with greater mass more than the car with less mass.
• The correct table for Andrew’s experiment is Table C since it shows the most amount of mass taking the most amount of time because gravity and friction will slow the cars with less mass more than the car with greater mass.
• The correct table for Andrew’s experiment is Table D since it shows the least amount of mass taking the least amount of time because gravity and friction will slow the cars with less mass more than the car with greater mass.

10.Linda wants to do an experiment to test the effect that weight has on motion. She will set up an experiment as shown in the following diagram, putting different weights on the string to see how far the car moves.

• The weight that Linda adds does not change the motion of the car.
• The more weight Linda adds, the faster the car will move because gravity pulls the weight to the ground.
• The more weight Linda adds, the slower the car will move because gravity pulls the weight to the ground.
• The less weight Linda adds, the faster the car will move because gravity pulls the weight to the ground.