Definitions
Motion
Machines
Forces
Sound and Light
100
The rate in which an object moves.
What is.... Speed
100
When an object is acted on by one or more outside forces, the total force is equal to the mass of the object times resulting accelerations.
What is.... the 2nd Law of Motion
100
Grooved wheel that rotates freely on a frame.
What is.... a pulley
100
Extra electrons that pile up in your body.
What is.... static electricity
100
The speed of sound.
What is.....
how fast sound travels in air = Mach 1= 760 mph
200
A closed path through which electric current flows.
What is.... Electric Circuit
200
An object will stay in motion with a constant velocity or will stay at rest until it is acted upon by an outside force.
What is.... the 1st Law of Motion
200
A set of pulleys.
What is.... a Block Tackle
200
The force that holds the center of an atom together.
What is.... strong force
200
Anything that travels faster than the speed of sound.
What is..... supersonic speed
300
The speed of an object in a given direction.
What is.... Velocity
300
Increase in an object's velocity and a decrease in an object's velocity.
What is.... positive acceleration
and
negative acceleration/deceleration?
300
What 2 simple machines are combined to make a screw?
What is..... an inclined plane and wheel and axle
300
Forces that both attract and repel.
What is.... electromagnetic force
300
What is the difference between reflection and refraction?
What is...
reflection is when light hits a mirror it bounces off.
refraction is when light enters a prism or water it bends.
400
A push or pull exerted on an object in an effort to change that object's velocity.
What is.... Force
400
The study of motion in physics.
What is.... Mechanics
400
Simple machines that magnify the force or increase the speed.
What is.... Mechanical Advantage
400
The force that attracts.
What is.... gravitational force
400
Four items mentioned in the text that move faster than the speed of sound.
What are...... bullets, rockets, cars, and whips.
500
A device that either multiplies or redirects a force.
What is.... Simple Machine
500
The motion of an object is described in relation to another object.
What is.... "all motion is relative" or reference point
500
Identify 4 parts of the lever in the graphic below.
500
Explain how a switch works in an electrical circuit.
What is....
When the switch is off/open circuit the flow of electrons is interrupted and cannot pass through the circuit.
When the switch is on/closed circuit the flow of electrons is allowed to pass through the circuit
500
When you see a green shirt, what colors of light are being absorbed and what colors are reflected?
What is ......Green light being reflected because that is the color that reaches your eyes and the rest of the colors that make up white light are being absorbed by the shirt.