Definitions
What's an independent variable?
The thing you change in an experiment.
How does friction help when riding a bike?
Possible answer: Friction between the tyres and the road helps the bike move forward and stop when brakes are applied. It also prevents the bike from slipping.
Who was Sir Isaac Newton?
A: a famous king
B: a famous artist
C: a famous scientist
C: a famous scientist
True or false: friction is ALWAYS helpful.
FALSE - Friction is not always helpful because it can make things harder or cause damage.
For example:
Newton’s First Law of Motion says “objects stay still or keep moving until something stops them.”
Which is an example of this?
A: A ball stays on the ground until someone kicks it.
B: A person runs faster when they push harder on the ground.
C: A balloon flies forward when the air inside it rushes (goes) out.
A: A ball stays on the ground until someone kicks it.
What's a dependent variable?
The thing you measure in an experiment (the outcome/result).
Why is friction important for snowboarding?
Possible answer: Friction between the snowboard and the snow helps the rider control their speed and make turns safely.
What does a Newton meter measure?
A: force
B: apples
C: temperature
A: force
True or False: Friction can make heat.
TRUE - examples: rubbing your hands together, rubbing two sticks together, etc.
Newton’s Second Law of Motion says “more force makes things move faster.”
Which is an example of this?
A: A book stays on a table and does not move.
B: A small ball rolls faster when you push it harder.
C: A swimmer pushes back on the water and moves forward.
B: A small ball rolls faster when you push it harder.
What are control variables?
The things that stays the same in an experiment.
How does friction help start a fire using sticks?
Possible answer: Rubbing sticks together creates friction, which generates heat. If enough heat is produced, it can ignite dry materials and start a fire.
Which of the following made Sir Isaac Newton want to study motion?
A: an apple falling from a tree
B: a shooting star
C: the invention of the bicycle
A: an apple falling from a tree
True or False: All surfaces make friction when objects move across them.
TRUE
Newton’s Third Law of Motion says “every action has an opposite (reverse) reaction (result).”
Which is an example of this?
A: A heavier (big) box is harder to push than a lighter (small) box.
B: A car stops because of the brakes.
C: A rocket pushes down on the ground, and the rocket moves up.
C: A rocket pushes down on the ground, and the rocket moves up.
What's an experiment?
A test to find out something new.
How does friction help when walking on a rough surface?
Possible answer: Friction between our shoes and the ground prevents us from slipping, allowing us to walk safely.
How many laws of motion did Sir Isaac Newton create (make)?
A: 2 laws of motion
B: 3 laws of motion
C: 8 laws of motion
B: 3 laws of motion
True or False: Friction slows moving objects down.
TRUE - Friction acts against the motion of objects, causing them to slow down or stop. For example, when you ride a bike and stop pedalling, the bike eventually slows down because of friction between the tyres and the road, as well as air resistance.
A car travels 60 kilometres in 2 hours. What is its speed?
Remember: Speed = Distance ÷ Time
A: 20 km/h
B: 30 km/h
C: 40 km/h
B: 30 km/h
What's a bar chart?
A picture that shows information with bars.
How does friction help when catching a ball?
Possible answer: Friction between our hands and the ball helps us grip it securely, preventing it from slipping out of our hands.
True or False: Sir Isaac Newton was American.
False - British. Don't worry this is not on the test ;)
Ramp A is made of wood, Ramp B is made of carpet, and Ramp C is made of ice. Which ramp (material) would make the toy car go the fastest? Which ramp (material) would make the toy car go the slowest? Why?
The ice would be the fastest because has the least friction while the carpet would be the slowest because has the most friction.
What does a Newton meter measure?
A tool that measures force using a spring and a scale. It’s named after Sir Isaac Newton.