Flashcards
What is energy?
Flashcards for quick repetition. Physical Science energy test.
Flashcards: 14
Played: 410 times
Which statements are true?
1. Energy cannot be destroyed or made.
2. Energy cannot be changed from one form to another.
3. Potential and kinetic energy cannot be exchanged into each other.
1. Energy cannot be destroyed or made.
Kinetic energy is:
motion relative
position relative
Which of those are forms of kinetic energy?
electrical
gravitational
light
chemical
thermal
mechanical
Match energy form with its source.
chemical energy
bonds between molecules
electrical energy
moving electrons
thermal energy
vibrating and moving of molecules
Ability to do work is called:
energy
What is the main source of energy on Earth?
Most of the energy used on Earth comes from the
. . . . . . . .
.
Most of the energy used on Earth comes from the sun.
What form of energy is this?
Elevator at the highest floor of a building has high
. . . . . . . .
energy.
Elevator at the highest floor of a building has high potential energy.
Is it kinetic or potential energy?
The faster an object is moving, the more
. . . . . . . .
energy it has.
The faster an object is moving, the more kinetic energy it has.
Which law states that energy can neither be created nor destroyed - only converted from one form of energy to another?
Law of variation of energy
Law of conservation of energy
Law of transformation of energy
Law of conservation of energy
Complete the sentence.
The sun provides plants with
. . . . . . . .
energy, which plants convert into
. . . . . . . .
energy.
The sun provides plants with electromagnetic energy, which plants convert into chemical energy.
Is sound a form of energy?
Sound is the movement of energy through matter.
What form of energy has a stretched rubber band?
What form of energy has a flying tennis ball?
What form of energy has air running out of flat tire?
