Energy Transformations
The energy of motion is known as this.
What is kinetic energy?
This is the direction of heat transfer.
What is hot to cold?
This phase of matter has a definite shape and volume because its particles are packed tightly together.
What is a solid?
Weight is the force of _______ acting on an object’s mass.
What is gravity?
A battery-powered flashlight transforms chemical energy into this type of energy.
What is electrical energy?
The three main types of heat transfer are conduction, radiation, and this.
What is convection?
The scientific principle that states energy cannot be created or destroyed, only transferred.
What is The Law of Conservation of Energy?
Unlike weight, an object’s mass stays the same no matter where it is in the universe. True or False?
What is true?
In a hydroelectric dam, the energy of falling water is first converted into this type of energy before being transformed into electricity.
What is mechanical energy?
This type of heat transfer occurs when molecules collide, like when a metal spoon heats up in a pot of soup.
What is conduction?
When heat is removed from a liquid, the molecules lose energy and move more slowly until they form this state of matter.
What is a solid?
A student tests how the temperature of water affects the time it takes for sugar to dissolve. Identify the independent and dependent variables.
What is the independent variable: water temperature, and the dependent variable: time for sugar to dissolve?
A gasoline-powered car converts chemical energy into mechanical energy, but it also produces this type of unwanted energy.
What is thermal energy?
This type of heat transfer is responsible for ocean currents, wind patterns, and the movement of magma inside the Earth.
What is convection?
This phase of matter has no definite shape or volume because its particles move quickly and spread apart.
What is a gas?
A student tests how different amounts of water affect plant growth. To ensure accurate results, they water three plants at each level of water amount. This is an example of what?
What is repetition?
During nuclear fusion in the Sun, atomic energy is converted into this type of energy that reaches Earth.
What is electromagnetic energy?
This type of heat transfer does not require matter to transfer energy.
What is radiation?
A material that does not allow heat to pass through it easily is called this.
What is an insulator?
Water has a high specific heat capacity. This means it takes _______ energy to change its temperature compared to other substances.
What is more?