Question 12 (1 point) question 12 unsaved
this type of heat transfer occurs when heat moves from one molecule to another.

question 12 options:

radiation0

conduction

convection

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question 13 (1 point) question 13 unsaved
what is it called when energy transfers between objects until they reach the same temperature and their particles move at the same rate?

question 13 options:

thermal equilibrium

movement

thermal energy

kinetic energy

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question 14 (1 point) question 14 unsaved
the transfer of energy in fluids or gases is:

question 14 options:

radiation

conduction

convection

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question 15 (1 point) question 15 unsaved
what is happening between points a-b?

question 15 options:

point a is demonstrating kinetic energy, as the roller coaster moves downhill the kinetic energy is transformed into potential energy.

point a and point b are examples of potential energy, there is not energy transformation taking place here.

point a is demonstrating potential energy, the potential energy is then transformed into kinetic energy as the coaster moves downhill.

point a and point b are examples of kinetic energy, there is not energy transformation taking place here.

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question 16 (1 point) question 16 unsaved
you notice after you walk across a room, you feel a spark when you touch the doorknob. what energy transformation must have taken place?

question 16 options:

electromagnetic -> electrical

thermal -> electromagnetic

electromagnetic -> mechanical

mechanical -> electrical

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question 17 (1 point) question 17 unsaved
what law states that energy can neither be created nor destroyed, but it is transformed?

question 17 options:

law of thermonuclear energy

law of thermal energy

law of kinetic energy

law of conservation of energy

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question 18 (1 point) question 18 unsaved
when you are watching tv, what is the main form of energy being used?

question 18 options:

mechanical

chemical

electrical

nuclear

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question 19 (1 point) question 19 unsaved
which of the following energy transformations occurs when you eat a hamburger?

question 19 options:

the chemical energy in the food is converted to mechanical energy to give the body energy to move.

the chemical energy in the food is not converted and is lost when the food is eaten.

the chemical energy in the food is converted to nuclear energy to with digestion.

the chemical energy in the food is converted to sound energy to the body hear.

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question 20 (1 point) question 20 unsaved
the heater in your bedroom most likely uses to transfer heat.

question 20 options:

conduction

radiation

convection

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question 21 (1 point) question 21 unsaved
at which two points on the pendulum, is the pendulum experiencing the greatest potential energy?

question 21 options:

a and d

a and b

b and c

a and c

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question 22 (1 point) question 22 unsaved
when a block of steel at 90 degrees celsius is placed in a bucket of water at 30 degrees celsius, what happens?

question 22 options:

the temperature of the steel increases and the temperature of the water decreases.

the temperature of the steel decreases and the temperature of the water decreases.

the temperature of the steel decreases and the temperature of the water increases.

the temperature of the steel increases and the temperature of the water increases.

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question 23 (1 point) question 23 unsaved
when electrical energy is "used" by an electric light, what really happens to the energy?

question 23 options:

it stops at the electric light.

it disappears.

it is given off as other forms of energy.

it changes to matter.

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question 24 (1 point) question 24 unsaved
when is kinetic energy transferred from one object to another?

question 24 options:

when two objects are moving

when two objects are in two places

when two objects collide

when two objects pass one another

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question 25 (1 point) question 25 unsaved
what energy transformation happens in a toaster?

question 25 options:

mechanical -> electrical

electrical -> thermal

thermal -> chemical

mechanical -> thermal

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