Flashcards
What is energy?
True or false?
Energy cannot be destroyed or made.
True or false?
Energy cannot be changed from one form to another.
True or false?
Potential and kinetic energy cannot be exchanged into each other.
Kinetic energy is:
position relative
motion relative
Which of those are forms of kinetic energy?
electrical
chemical
mechanical
thermal
gravitational
light
Match energy form with its source.
chemical energy
bonds between molecules
Match energy form with its source.
electrical energy
moving electrons
Match energy form with its source.
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 sun.
What form of energy is this?
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 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 conservation of energy
Law of transformation of energy
Law of variation of energy
Law of conservation of energy
Complete the sentence.
The sun provides plants with electromagnetic energy, which plants convert into chemical energy.
Is sound a form of energy?
yes
no
What form of energy has a stretched rubber band?
kinetic
potential
What form of energy has a flying tennis ball?
kinetic
potential
What form of energy has air running out of flat tire?
kinetic
potential
{navButtons}