Kinetic and Potential Energy
At what point is potential energy the greatest on a roller coaster?
At the highest point.
What type of energy transformation occurs as a car rolls down a ramp?
Potential energy is converted to kinetic energy.
What happens to thermal energy when two objects reach the same temperature?
Thermal energy transfer stops.
What type of energy transfer is shown when using a lamp?
Electrical energy → light and heat energy.
What is being investigated when a pendulum is released and the time it swings is recorded?
Potential energy to kinetic energy transformation.
What type of energy does a ball have when rolling down a hill?
Kinetic energy.
What energy transformation occurs in solar panels that power appliances?
Light energy is converted to electrical energy.
What process involves heat transfer in a beaker with circulating liquid?
Convection
What energy transformation occurs in a wind turbine?
Mechanical energy → electrical energy.
A ball is dropped from increasing heights. What happens to its kinetic energy?
A ball is dropped from increasing heights. What happens to its kinetic energy?
A stationary rock on a hill has which type of energy?
Potential energy.
What type of energy is transferred when a slingshot releases a marble?
Potential energy is transferred into kinetic energy
What type of thermal energy transfer is used when baking brownies in a metal pan?
Conduction, convection, and radiation.
When Jenna flips through the pages of a book, what type of energy is involved?
Mechanical energy.
If a marble is released from different distances in a slingshot, which one travels the farthest?
The marble released from the greatest distance.
As a pendulum swings, when does it have the least potential energy?
At the lowest point of the swing.
When a television is turned on, what energy transformation is least likely to occur?
Mechanical energy.
What direction does thermal energy transfer when warm food is placed in a refrigerator
From the food to the refrigerator.
If the angle of a ramp increases, how does this affect the distance traveled by a toy car?
The car travels farther due to more potential energy being converted to kinetic energy.
When thermal energy transfers between two substances, what is the final result?
Both substances reach the same temperature
If an object is dropped from a greater height, what happens to its potential energy?
It increases.
When baking cookies in an oven powered by solar energy, what transformations occur?
Light energy → electrical energy → heat energy
In what type of heat transfer do photons play a role, allowing energy transfer in space?
Radiation
Why is convection considered efficient in heating liquids?
Heated molecules rise, and cooler ones sink, creating a convection current.
What best explains the efficiency of energy transfer during conduction?
Heat flows from high to low temperature via molecular motion.