Science review year 5

The students are sliding across the corridor because ....

• the surface of the floor is smooth

• the surface of the floor is too rough

• the friction between their feet and the floor is too large

• there is no friction

The force that acts in the opposite direction of motion when two surfaces come in contact. 

• Force
• Friction
• Static
• Kinetic 

Which of the following is an example of friction that is helpful?

• Brakes used on a bike
• Tires from a car on the road
• Tread on the bottom of your shoes
• All are examples that are helpful

Why is it harder for the boy in Image B to get down the hill?

• Motion
• Friction
• Work
• Displacement

Should experiments be repeated over and over to see if the results are the same each time?

• yes
• no

Mrs. Gibson creates an experiment with different heights of ramps to see which height makes a toy car travel farther. One factor to change is?

• Size of the car

• Height of the ramp

• Distance the car travels

• Surface of the ramp

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

These forces are...

• Balanced

• Unbalanced

These forces are...

• Balanced

• Unbalanced

If an object is not moving the forces acting upon it are _____________

• unbalanced
• weak
• balanced
• Hulk Smash!