Newton's Laws of Motions
What do balanced forces equal?
0 Net Force
What is energy?
The ability to do work
What are the four familiar states of matter?
Solid, Liquid, Gas and Plasma
What is a wave?
A disturbance that carries energy from one location to another
What is electricity?
The presence and/or flow of electric charges
Which of Newton's laws states that for every action, there is an opposite and equal reaction?
What is the SI unit for energy?
Joules (J)
Which state of matter has the LEAST kinetic energy in its particles?
Solid
True or False: A mechanical wave does NOT require a medium to travel through
False: Mechanical waves do require a medium
What is the flow of charged particles called?
Electric current
By what is the curved path traveled by a thrown baseball known?
Projectile motion
Potential Energy vs. Kinetic Energy
Potential Energy - stored energy waiting to be used
Kinetic Energy - energy in motion
What is an aqueous solution?
A solution in which water is the solvent.
What are some common wave behaviors?
Reflection, Refraction, Diffraction, Absorption, Transmission and Scattering
True or False: All matter is composed of ONLY positive particles
False: All matter is composed of negative and positive particles
What force is necessary to accelerate a 1,250kg car at a rate of 40m/s/s, using the formula F=ma?
F = 50,000 N
What are the forms of energy?
Mechanical, Chemical, Nuclear, Solar, Thermal (Heat), Electrical and Sound
Define and give an example for each common phase change.
Melting - solid to liquid / an ice cube melting
Freezing - liquid to solid / water freezing to form ice cubes
Vaporization - liquid to gas / wet towel drying in the sun
Condensation - gas to liquid / water droplets forming on the outside of a glass (Cold drink)
Sublimation - solid to gas / dry ice
Give some examples of transverse waves.
Ocean waves, ripples on water surface, vibrating guitar strings & electromagnetic waves
What is a simple circuit composed of?
A student wants to life a 50kg box. She has four pulleys and a 20m rope. Which arrangement would have the greatest mechanical advantage?
What is the formula to calculate KINETIC energy?
KE= ½ mv² (1/2 x mass x velocity²)
True or False: Sublimation requires heat
True: Heat goes into the solid as it sublimates.
What is amplitude?
How much energy the wave carries. It is the distance from rest to crest or rest to trough.
What is resistance?
How difficult it is for electrons to flow through a material (friction)