Magnetism
Conservation of Energy
Energy Transformation
Newton
Waves
100
Jose has two bar magnets. He pushes the ends of the two magnets together and then he lets go. The magnets move quickly apart. Why is this?
Repulsion: Magnets poles are the same either north and north or south and south.
100
Which factor has the greatest impact on kinetic energy?
velocity
100
What variables are needed to determine the kinetic energy of an object?
mass and velocity
100
Which of Newton's Three Laws of Motion is based on the equations F=ma?
Newton's 2nd Law of Motion
The acceleration of an object depends on the mass of the object and the amount of force applied.
100
What is the frequency of the following wave?
5 Hertz
200
The south pole of Earth's magnetic field is closet to which continent?
North America
200
A lamp is used in a restaurant to keep food warm. What type of energy transformation is occurring?
Electrical to Radiant to Thermal
200
To change one form of energy into another is known as
Energy Transformation
200
Which of Newton's Three Laws of Motion is also known as the Law of Inertia?
The law of inertia is Newton's 1st law.
(An object rest stays at rest, and object in motion stays in motion, unless...)
200
As the wavelength of a wave decreases, what happens to the frequency?
the frequency increases
300
The strongest magnets are made from?
Neodymium
300
A plane uses gasoline to fly. What type of energy transformation is occurring?
Chemical to Kinetic
300
Give an example of chemical energy
Food
Batteries
Gas
Coal
Any exothermic reaction really
300
What is Newton's third law of motion?
When one object exerts a force on another object, the second object exerts an equal and opposite on the first
300
Name each part of the wave
a: Crest
b: Trough
c: Amplitude
d: Wavelength
400
What type of forces are magnetic forces known as?
non-contact forces
400
What does the law of conservation of energy state?
That energy cannot be created or destroyed.
400
Which type of energy is "created" by vibrations?
Sound
400
A book is sitting at rest on your desk.
Describe what is happening with the book, and with the desk.
The book pushes down on the desk and the desk pushes up on the book.
400
What letter shows reflection of a wave similar to a echo in sound waves?
A
500
Earth's magnetic field comes from?
its iron core
500
What type of energy is found in substances that can be stretched or compressed?
Elastic
500
Name the energy transformation:
A glow stick changes
chemical energy into radiant energy
500
Which of Newton's laws best explains why a cannon moves backwards when it shoots a cannonball?
Newton's third law of motion.
(Cannonball exerts an equal and opposite on the cannon.)
500
As the amount of energy carried by an electromagnetic wave increases, what happens?
the frequency of the wave increases