Energy Transfers
What is the process called when energy moves from one object to another?
Energy Transfer
True or False: Turning on a light requires an energy transformation
True - electrical to light energy
Define Energy efficiency
The ratio of useful output energy to the total input energy, expressed as a percentage.
What do you break before you use?
An Egg
Which planet is closest to the sun?
Mercury
True or false: Lighting a fire only requires the transfer of energy
False. Requires the transformation of energy into different types.
What is an energy transformation?
The process of changing energy from one form to another.
How do energy-efficient appliances save consumers money?
They reduce energy consumption, leading to lower utility bills over time.
Which month has 28 days?
All of them
Where is the strongest human muscle located?
Jaw
Name one example of energy transfer from potential to kinetic energy.
A falling rock or a roller coaster going down a hill.
What energy transformations occur when using a battery in a flashlight?
chemical potential energy -->electrical energy -->light energy --> heat energy
Provide an example of how energy transfer is used in renewable energy sources.
Solar panels convert solar energy into electrical energy.
What are the next three letters in this sequence: O, T, T, F, F, S, S—what comes next?
E, N, T. The letters are the first letters of the written numbers: one, two, three, four, five, six, seven. “Eight, nine, ten” are next.
What scientific theory proposed that Earth revolves around the sun?
Heliocentrism
What is the primary energy transfer occuring in a wind turbine causing the storage of electricity.
Kinetic energy (wind moving the blades creating kinetic energy within the turbine).
Describe the transformation of energy that occurs when a car accelerates.
Chemical energy from fuel is transformed into kinetic energy of motion.
Discuss the role of energy efficiency in combating climate change.
Increased energy efficiency reduces greenhouse gas emissions by lowering energy consumption.
What is light as a feather but you could not hold forever?
Your breath
What is the scientific theory that explains the origin of the universe?
The Big Bang Theory
Describe how kinetic energy is transferred when someone rides a bike.
Kinetic energy from the person moving their legs will be moved to the pedals which move the chain. The chain moving then causes the wheel to move.
Draw a Sankey diagram for a car moving where you start with 437J, 360J is put into kinetic energy, and 77J is heat energy.
Then calculate the energy efficiency of the car.
Energy Efficiency is 82.4%
What is nuclear energy?
Nuclear energy is the energy stored in the nucleus (core) of an atom, released through nuclear fission (splitting atoms) or fusion (combining atoms)
What has one eye but cannon see?
A needle
What mammal lays eggs?
echidna's/ platypus