Show:
Forces
Isaac Newton
Work & Power
Machines & Energy
Wild Card
100
What is the universal force that caused our cars to roll down the ramp?
Gravity
100
Name one example from Bill Bryson’s book that describes Isaac Newton’s eccentric and odd habits.
Variety of answers
100
What is the mathematical definition of Work? How is it calculated?
Work = Force x Distance
100
What simple machine might you use to get a heavy object on the back of a truck rather than lifting it straight up?
Ramp or inclined plane.
100
What was the name of the dog that locked himself in the car during the Wind Turbine video?
DoDo
200
A boy pulls a wagon with a force of 6 Newtons to the east as a girl pulls the wagon with a force of 20 Newtons to the west. Is this an example of a balanced or an unbalanced force?
Unbalanced
200
Newton’s 1st Law states that an object in motion will stay in motion unless an unbalanced force acts upon it; why is this hard to witness or observe under normal circumstances on Earth?
Friction is everywhere!
200
If you measure work in terms of joules, how do you measure power?
Watts
200
Fill in the blank: Humans use machines to make _______ easier. (hint: a physics term)
Work
200
Isaac Newton was born the same year as this other famous scientist died.
Galileo
300
Friction is a force that opposes _____________ .
Motion
300
What do the letters mean in the equation; F=ma ?
Force = Mass x Acceleration
300
What are two things that must happen for work to be done?
A force must be applied to an object that moves in the same direction as the force.
300
Explain a basic roller coaster in terms of kinetic energy, potential energy, sound energy and thermal energy.
At the top of a hill, the coaster has a certain amount of potential energy. Once it starts moving, that potential energy is converted to kinetic, sound and thermal energy.
300
Describe why chemical energy is a form of potential energy.
Energy is stored in all molecules and is released when those molecules are split apart in chemical reactions.
400
Explain why friction is greater when a something slides against sand paper compared with glass.
The microscopic surface of the sandpaper is covered with more bumps and ridges compared with glass. A rougher surface will create more friction between the object sliding across the sandpaper.
400
What force is necessary to accelerate a 70 kg object at a rate of 4.2 m/s2 (include the unit of measurement) ?
294 Newtons
400
Fill in the blank: Power is a measure of how fast ________ is done.
Work
400
What type of energy is always involved when friction occurs?
Thermal
400
How did we measure our cars average velocity as they raced across the room?
Distance traveled divided by the time from start to finish.
500
What does the net force equal in this example? A dog pulls a rope 12N to the west while another dog pulls the same rope with 10N of force to the east.
2 Newtons to the West
500
Explain the lift off of a rocket ship in terms of Newton’s 3rd Law.
The gas explosion pushes a force downwards, but an equal and opposite force pushes the rocket ship upwards.
500
What idea about work and force does the diagram on the board describe?
The same amount of work is done in both cases.
500
A trebuchet begins with a certain amount of potential energy. Name two types of energy that this potential energy is converted into when the trebuchet is fired.
Kinetic, sound, thermal
500
Explain the parts of the turbine that converts kinetic energy to electrical energy.
The spinning rotor causes a series of magnets to spin within a copper wire ring. This action causes electrons in the copper wire to start moving and create electricity.