Concept of Energy
What is energy?
The ability to do work.
What is the symbol used to show energy is transferred?
An arrow.
What is a circuit?
The path that electricity takes.
Which of the following if placed in the space of an opened circuit will allow the bulb to light?
Coin
Glass
Rubber
Coin
What is mechanical energy.
Mechanical energy has both kinetic and potential energy.
What unit is used to measure energy?
Energy is measured in Joules.
In a television, what is the input energy?
Electricity
What are the parts of a simple circuit?
Wire, battery, bulb and switch
True/False
Glass is an example of a conductor
False
A battery
What is the difference between kinetic and potential energy?
Kinetic energy is energy in motion.
Potential energy is energy at rest.
In a radio, what is an the output energy?
Sound and heat
What is the difference between a closed and open circuit?
A closed circuit allows a light bulb to light whereas an open circuit does not allow a light bulb to light.
Which of the following is an insulator?
Water
Plastic
Lemon
Plastic
Which bulb/bulbs will light brighter?
a) one bulb and a battery
b) three bulbs and two batteries
c) one bulb and two batteries
c) one bulb and two batteries
Give three examples of energy.
The answer may vary.
What is the energy transformation in a wrecking ball.
Potential to kinetic
Give an example of a series circuit and a parallel circuit.
Series circuit, christmas lights and parallel circuit, house wiring.
Which of the following is an example of a conductor?
Potato
Wood
Paper
Potato
What is the metal that is usually used in wires?
a) silver
b) gold
c) copper
copper
What does the law of conservation state?
Energy cannot be created nor destroyed.
What is the energy transformation in a stove?
Chemical to heat
What is the difference between a series and parallel circuit.
In a series circuit, the electricity only has one path to move on, whereas in a parallel circuit, the electricity has different paths to move on.
What is the difference between a conductor and an insulator.
A conductor allows heat or electricity to ppass through, whereas, an insulator does not allow heat or electricity to pass through.
What does the acronym MELTS stand for?
Mechanical
Electrical
Light
Thermal
Sound energy