Students conducted an investigation in which they rolled a bicycle wheel on different ground surfaces. What is a testable question that the students could be investigating?
How does friction of ground surfaces affect how a bicycle wheel rolls?
How does the size of a bicycle wheel affect how it is rolled on different ground surfaces?
How does gravity affect how a bicycle wheel rolls?
How do different types of bicycle wheels affect how they roll on different ground surfaces?
Seesaws are a fun park activity that use force to work.
How does force make a seesaw move?
Children sit on either side of the seesaw, and the equal forces of sitting will cause it to move.
Children must use their legs to push off the ground, making the seesaw rise up and down. The forces will become unequal, causing it to move.
The seesaw slides back and forth with the help of the force of friction, causing it to move.
Force is not needed to make the seesaw move.
Jamar was making a peanut butter and jelly sandwich for lunch one day. After putting the peanut butter on his bread, he then went to open the jelly jar. Jamar tried twisting open the jar. After several tries, he just could not get it open.
Why might Jamar not be able to open the jar of jelly?
The force of gravity is causing the lid to not open.
The forces are unequal, causing the lid to not open.
The force of twisting is causing the lid to not open.
The forces are equal, causing the lid to not open.
A dandelion is blown by the force of wind in nature. What will happen to the dandelion as the wind keeps blowing?
Nothing will happen to the dandelion.
The dandelion will lose its seeds as the wind creates an unequal force.
The dandelion will keep its seeds as the wind creates an equal force.
The dandelion will lose its seeds as the wind creates an equal force.
Students are investigating and observing the “domino effect.” They set dominoes up in an intricate design and then push one domino at the end of the design.
What will students observe in this investigation?
The domino that is pushed will fall over because of the force of gravity, leaving the other dominoes to remain standing.
The domino that is pushed will fall over because of the force of friction, knocking into other dominoes and pushing them down.
The domino that is pushed will fall over because of the force of gravity, knocking into other dominoes and causing gravity to pull them down one after the other.
The domino that is pushed will fall over because of the force of magnetism, leaving the other dominoes to remain standing.