Vocabulary
the ability to do work
energy
The biggest source of light energy
sun
When an object is lifted higher, it increases its:
A) Potential energy
B) Kinetic energy
C) Thermal energy
D) Mechanical energy
A) Potential energy
Energy can not be lost or destroyed, only _______ into a different form of energy
changed/converted
the energy that comes from a substance whose molecules are vibrating faster due to a rise in temperature.
heat or thermal energy
The energy of motion
mechanical energy
If you imagine a drop of water about to fall down a waterfall, at the top of the waterfall the drop of water has this kind of energy.
Potential Energy
this form of energy cooks food in boiling water
thermal/heat energy
a light bulb converts electrical energy into which of the following energy?
light only
heat and light
heat only
light and motion
heat and light
Energy that is the SUM of kinetic and potential energy
Mechanical Energy
______ energy is the only source of energy we can see.
Light Energy
What is the charge of an object that loses electrons?
Positively charged
What has a greater impact on Kinetic Energy; mass or speed?
Speed
How can a roller coaster gain potential energy?
Go higher
Which of the following is not a component of a simple electric circuit?
A) A light bulb
B) A magnet
C) A battery
D) A wire
B) A magnet
Which part of a sound wave affects its pitch?
A) Frequency
B) Amplitude
C) Crest and Trough
D) Volume
A) Frequency
What energy CHANGE takes place when someone plugs a radio into an electrical outlet?
light energy changes to sound energy
sound energy changes into electrical energy
electrical energy changes into sound energy
chemical energy changes into sound energy
Electrical energy changes into sound energy
Which description fits an electrical insulator best?
A) They allow electrons to move freely.
B) They must always be metal.
C) They increase current flow.
D) They resist the flow of electrons effectively.
D) They resist the flow of electrons effectively.
A hair dryer transforms _______energy to _____ ,________, & ________
electrical to mechanical, sound, and heat
Friction acts in which direction relative to an object’s motion?
A) In the same direction
B) Perpendicular
C) At rest
D) Opposite direction
D) Opposite direction
The Law of Conservation of Energy states that energy is never created or destroyed, it is only ________ from one form to another.
changed
music coming from the radio, your loud vacuum cleaner, people talking on tv are all examples of this type of energy
sound energy
Energy at rest is what kind of energy?
potential energy
When friction acts between two surfaces in motion, which form of energy increases due to the friction?
A) Chemical
B) Thermal
C) Light
D) Nuclear
B) Thermal
The volume or loudness of a sound determined by the sound wave’s:
A) Frequency
B) Wavelength
C) Speed
D) Amplitude
D) Amplitude