G8 Friction & Toy Car Quiz

Which is an example of friction?

• Cat sitting on floor

• Skis on snow

• Ball rolling down a mountain

• All of the above

What is static friction?

• Friction when things are moving

• Friction when things are rolling

• Friction when things are not moving

• Friction of objects with static energy

A force is a push or pull. Examples of forces include pushing to open a door, pushing a book across a desk, or pulling a wagon. What would take a greater force to move?

• A book

• A desk

• A toy car

• A pencil

Tags

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A toy car rolling along different surfaces will experience different amounts of friction. The toy car would encounter the most friction when rolling on which of the following surfaces?

• A carpet

• Ice

• A sheet of glass

• A wood plank

Jose is a mechanic at an automobile repair shop. He spilled a can of oil on the concrete floor. The spilled oil will reduce which force?

• Air resistance

• Friction

• Gravity

• Magnetism

Susan designed an experiment to determine the speed of a toy car. What tools will she need to measure speed?

• Spedometer

• Meter Stick

• Meter stick and stopwatch

• Stop Watch

What two measurements do you need to calculate speed?

• Time and Surface Type

• Distance and Time

• Distance and Surface Type

• Distance and Acceleration

A puck slides along an icy surface. What makes it slow down?

• Lack of energy

• Friction

• Time

• Distance

Tags

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Rougher surfaces have...

• More Speed

• Less Speed

• More Friction

• Less Friction

Which is true?

• Friction is a force that only occurs between solids

• Friction is a force that only occurs on rough surfaces

• Friction is a force that only occurs when surfaces touch each other