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- Multiple ChoicePlease save your changes before editing any questions.
_________ are high energy rays used in medicine to sterilize equipment and are often used in surgery
Alpha Radiation
Beta Radiation
Gamma Radiation
- Multiple ChoicePlease save your changes before editing any questions.
What energy transformation below occurs in a blow dryer?
Electrical -> thermal
chemical -> thermal
Electrical -> chemical
thermal -> electrical
- Multiple ChoicePlease save your changes before editing any questions.
Which is an example of kinetic energy?
A soccer ball is lying on the ground.
A person is standing in line.
A roller coaster is sitting at the top of a hill.
Water is flowing over a dam.
- Multiple ChoicePlease save your changes before editing any questions.
Conservation of energy means that
energy can be created but not destroyed
energy can be destroyed but not created
energy can be both created and destroyed
energy can be neither created nor destroyed
- Multiple ChoicePlease save your changes before editing any questions.
Which is the best example of an object with only potential energy?
a boat sailing through the water
a boulder resting on top of a cliff
a ball being thrown across a field
water being poured out of a pitcher
- Multiple ChoicePlease save your changes before editing any questions.
If a green golf ball is dropped from a height of 7 feet and a yellow golf ball is dropped from a height of 12 feet, which ball has greater potential energy before it is released?
Yellow
Green
Both have the same amount of potential energy
Neither will have more potential energy than the other
- Multiple ChoicePlease save your changes before editing any questions.
When a roller coaster reaches the bottom of a steep slope, it has...
low PE and high KE
high PE and low KE
low PE and low KE
high PE and high KE
- Multiple ChoicePlease save your changes before editing any questions.
Where would this tossed baseball have the least amount of kinetic energy?
W
X
Y
Z
- Multiple ChoicePlease save your changes before editing any questions.
The measure of the average kinetic energy of each atom in the substance is known as the __________
Heat
Temperature
Thermal Energy
Radiant Energy
- Multiple ChoicePlease save your changes before editing any questions.
The amount of energy needed to heat up one kg of a substance by 1°C or 1K is known as the....
Thermal Energy
Specific Heat Capacity
Temperature
Kinetic Energy
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is not a way of transferring heat?
Conduction
Convection
Concurrent
Radiant
- Multiple ChoicePlease save your changes before editing any questions.
Energy can not move in this type of system
Open
Closed
Empty
Isolated
- Multiple ChoicePlease save your changes before editing any questions.
Machine’s can never be fully efficient because some of their energy will be lost as...?
Potential Energy
Radiant Energy
Thermal Energy
Elastic Energy
- Multiple ChoicePlease save your changes before editing any questions.
Materials that can easily transfer heat are called
Isolators
Insulators
Conductors
Convectors
- Multiple ChoicePlease save your changes before editing any questions.
A wooden bench and a metal bench on a hot summer day will be different temperature because they have different...?
Electrons
Protons
Heat Capacities
Hardness
- Multiple ChoicePlease save your changes before editing any questions.
Isotopes are two atoms that have....?
The same number of neutrons
The same number of electrons
Different number of electrons
Different number of neutrons
- Multiple ChoicePlease save your changes before editing any questions.
Gamma radiation emits ....?
Alpha particles
Electrons
Helium
Photons
- Multiple ChoicePlease save your changes before editing any questions.
The time taken for an isotopes to fall to half its original value is known as the
Decay Capacity
Radiation rate
Half Life
Longevity
- Multiple ChoicePlease save your changes before editing any questions.
The sun is an example of
Fission
Radioactive Decay
Fission
Elastic Energy
- Multiple ChoicePlease save your changes before editing any questions.
____________ has the greatest impact on earth’s energy.
Thermal Energy
Radiant Energy
Potential Energy
Nuclear Energy
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is not a greenhouse gas?
Water
Methane
Carbon Dioxide
Sodium Chloride
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is not a source of human-produced greenhouse emissions
Electricity
Agriculture
Transportation
Nuclear Energy