Energy 1
Define energy
the ability to do work
This is the abbreviation for kinetic energy.
K.E
The biggest source of light energy for Earth
sun
Energy possessed by a drop of water about to fall from the top of a waterfall.
Potential energy
ehat
heat
Mystery Question
CONGRATULATIONS! ALONG WITH THE POINTS YOU GET FOR CHOOSING THIS SQUARE, THIS IS YOUR FREE PASS TO CHOOSE AGAIN IF YOU FAIL A QUESTION
What is energy in motion?
kinetic energy or mechanical energy
Energy cannot be lost or destroyed, only transformed into a different form of energy. True or False
True
What are three ways heat can be transferred?
conduction, convection, and radiation
Potential energy associated with objects that can be compressed.
Elastic potential energy
AHMRTEL
thermal
Name a local Nuclear Power Plant.
Surry Power Station
Type(s) of energy used by an oven use to bake cakes.
What is the energy transformation?
______ to ______ to ________ (food)
Electric energy to heat / thermal energy to chemical
A hair dryer transforms _______energy to _____ and ________
electrical, heat and sound
True or false: Energy is anything that has mass and takes up space.
False. The answer is matter.
Use your whiteboard to illustrate the direction of heat flow with the three temperatures.
20o C 60o C
200o C
200o C will have arrows pointing to other #'s.
TEPLTIOAN
potential
Name a famous Nuclear Power Plant accident.
The accident at Fukushima occurred after a series of tsunami waves struck the facility and disabled systems needed to cool the nuclear fuel.
The accident at Chernobyl.
The Three Mile Island Unit 2 reactor, near Middletown, Pa.
SI unit of potential energy
joules
What is the energy transformation when you rub your hands together
kinetic/mechanical to thermal
If there is friction between 2 moving bodies, then mechanical energy is converted into............
heat or thermal energy
Both of these types of energy produce "waves" and are a part of our bodies' senses. Some examples are your tv and your phone.
light and sound
TECAICELLR
electrical
What are 3 major types of fossil fuels?
coal, oil, and natural gas
Define Nuclear Energy
Energy stored in the nucleus of an atom.
Factors that potential energy depends on
hint: Things that make more PE.
1. __________ 2. ___________
mass and height
Mystery question!
CONGRATULATIONS! ALONG WITH 50 POINTS YOU GET FOR CHOOSING THIS SQUARE, THIS IS YOUR FREE PASS TO CHOOSE AGAIN IF YOU FAIL A QUESTION
To calculate mechanical energy of a body what all must you add?
Its potential energy and kinetic energy
airtand
radiant
What are 3 of the 5 main types of renewable energy.
What makes an energy source renewable or nonrewable?
Renewable energy is derived from natural sources that are replenished at a higher rate than they are consumed. Nonrenewable will run out or not replenished in our lifetime.
sun - solar energy
water - hydroelectric ex: Hoover Dam
Wind - wind mills
Geothermal
Biomass
What type of nuclear energy releases heat instead of greenhouse gases? (nuclear powerplant)
Fission
If you were to fall, this would increase as you fell.
kinetic energy
Draw on your whiteboard or act out a scene to demonstrate three ways heat is transferred.
Conduction - touching
Convection - density heat rises and cool sinks.
Radiation - heat from electromagnetic waves (microwaves, sun, campfire)
If you have a bowling bowl, basketball, and a tennis ball moving in the same speed, which ball have more kinetic energy? Why?
Bowling ball - it has more mass.
CINCLMAAHE
mechanical
How are fossil fuels created?
Many ways keep it simple:
Something living dies. It gets buried in sediment. Over time layers of rock cover the organic material (peat) then heat and pressure turn peat into fossil fuels.
What is the source of energy for our sun and stars?
fusion
Energy transformation needed for you to SEE a star
nuclear to electromagnetic or light
Give an example of an energy transformation that is from Electrical to Chemical.
Battery charger
Describe the energy transformation in a nuclear power plant.
a large nucleus is split (fission) with uranium producing heat / thermal energy. Thermal energy heats up water to create steam. The steam turns the turbine (MECHANICAL ENERGY). The turning of the turbine creates ELECTRICAL ENERGY in a generator. Electricity is given to power lines.
elicmahc
chemical
Why is burning fossil fuels bad for Earth?
It creates air pollution. They release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gasses trap heat in our atmosphere, causing global warming.
What type of nuclear energy
Starts with U-235
Starts with H
U = fission
Uranium in Nuclear power plants
H = Fusion
Hydrogen in the sun
This form of energy is caused by object's vibrations that transmits energy through the air around it.
sound energy
Heat travels from _____________ to ____________
from hot to cool
Describe the energy transformation where a match is struck against a box and produces light and heat.
chemical to mechanical to radiant and thermal
TOOANFNAIMRSRT
transformation
What is the law of conservation of energy?
Energy cannot be created or destroyed. It just changes form.