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Energy
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A quiz covering potential energy, kinetic energy, transformations etc
Flashcards
24 cards
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Questions
24
Answers
1
The formula for gravitational potential energy is
GPE = mvh
GPE= mgh
GPE = dvg
GPE = hgh
2
A longbow stores what type of energy
elastic potential
muscular
weapon
kinetic
3
An energy transformation is
when energy moves to new places
one type or state of energy changes to a new type or state
when energy is converted to the same type
very uncommon
4
What is energy?
Energy is everywhere
Energy is the capacity to do work
Energy is mass
Energy is only found in some places
5
Which of the energy types from the gun are waste energy
chemical + light + sound
mechanical + sound
light + mechanical + sound
sound + light + heat
6
Energy can never be XXXXX or destroyed it just changes YYYYY and VVVVV
XXXXX = created, YYYYY = state, VVVVV = type
XXXXX = created, YYYYY = fluidity, VVVVV = composition
XXXXX = created, YYYYY = type, VVVVV = composition
XXXXX = state, YYYYY = type, VVVVV = composition
7
When the skier is halfway down the hill the distribution of energy is
100% potential
75% potential 25% kinetic
50% potential 50% kinetic
100% kinetic
8
kinetic energy is dependent on
volume and mass
velocity
density and volume
mass and velocity
9
One of the following shows the energy transfers from a gun
chemical -> light, sound, heat and mechanical
potential mechanical -> light, sound and heat
potential chemical -> chemical + sound + heat + mechanical
potential chemical -> sound + heat + mechanical
10
When the skier is at the bottom of the hill the distribution of the energy is
100% kinetic
90% kinetic 10% potential
100% potential
90% potential 10% kinetic
11
The gravitational potential energy of an object is dependent on
mass, height and gravity
gravity, height and volume
mass, velocity and volume
mass, velocity and density
12
Energy has how many different states
Three
Two
Four
Only One
13
Which list has only types of released energy
gravitational, pure, sound, vibrational
sound, light, chemical, ground
elastic, heat, sound, nuclear
sound, light, heat, mechanical
14
An energy transfer occurs when
converts from potential to kinetic
energy is gained by an object
energy of one type moves to another place but stays the same
energy is lost from an object
15
A TV set releases what type of useful energy
light + heat
electrical + heat
light + sound
sound + heat
16
A car battery has
potential nuclear energy
electrical energy
chemical energy
potential chemical energy
17
What is work
Work is when you exert force
Something that you can do
The use of a force to move an object a distance
Work only occurs when you want it
18
The two states of energy are
Liquid and Gas
Electrical and Kinetic
Potential and kinetic
Potential and Chemical
19
The efficiency of a device is measured in
how much useful energy it makes
how cheap it is to run
how much useful energy produced compared to the energy used
how little electricity it uses
20
Which of the energy types resulting from the gunpowder burning are useful energy
sound
light
heat
mechanical
21
Potential energy is XXXXX energy
mechanical
stored
chemical
nuclear
22
The types of potential energy are
chemical, nuclear, elastic, gravitational
sound, heat, light, chemical
electrical, nuclear, kinetic
food, springs, catapults, bombs
23
When the skier is perched on top of a hill its energy is distributed as
100% potential
90% kinetic 10% potential
90% potential 10% kinetic
100% kinetic
24
A rock perched on the top of a hill has
elastic potential energy
energy = to its height
energy = its mass
gravitational potential energy
