Speed-how fast you are going (distance/time) Velocity-speed with direction
100
What is potential energy?
Stored energy
100
What do you use a triple beam balance for?
Measuring MASS
100
What is static electricity?
A charge that rests on an object.
100
A sound wave that bends around a corner is:
Diffracting
200
What is a force?
A push or a pull
200
What is the universal law of energy?
Energy can neither be created nor destroyed, only transferred.
200
What is the independent variable?
The variable that you change or modify
200
A circuit in which all the loads share the voltage.
Series circuit
200
What is the highest and lowest lights on the EM spectrum:
Highest: gamma
Lowest: radio
300
What is Newton's Second Law?
The greater mass an object has, the greater force it would take to accelerate it.
300
What kind of energy conversion happens when you turn on a light bulb?
Electric energy (in wires)>light/thermal energy (from the bulb heating up)
300
What is the dependent variable?
The variable you measure
300
The rate at which charges pass a given point.
What is current?
300
An electronic form of echolocation used by boats to sense other objects underwater.
What is sonar?
400
What is the difference between mass and weight?
Mass-amount of mater and it doesn't change.
Weight-amount of g force on an object, it changes
400
What is convection?
Transfer of thermal energy through a liquid or gas
400
Ms. Lynch decides to test if gender affects balance and agility. She makes the whole 8th grade walk across a tightrope and times each student to see how long they take. What is the IV and the DV?
IV: gender of students
DV: time it takes to walk across tight rope
400
What are three ways an object can become charged?
Induction, Conduction, Friction
400
What kinds of waves CAN travel through a vacuum? (no medium)
LIGHT and RADIATION
500
What does a machine do? AND Name two simple machines.
A machine changes the size or direction of force, making work easier--but not changing the AMOUNT of work. Inclined plane, lever, pulley, wheel and axle, wedge, screw.
500
What is the difference between heat and temperature?
Heat: transfer of energy between objects of different temps
Temp:measurement of kinetic energy of molecules
500
Why is it important to only change ONE variable and have constants in your experiment?
You only want to test if that ONE variable is responsible for the variable you are measuring, otherwise your results could be influenced by other factors
500
What is the Law of Electrical Charges?
Opposite charges attract, like charges repel
500
Which kind of lens MAGNIFIES an object? (the beams of light converge when passing through it)