forms of energy
What kind of energy is stored in food products
chemical
which one is the best renewable energy source: coal or wind
wind
what does the law of conservation say
energy can't be created or destroyed
toasters transferms electrical to?
thermal
what type of simple machine is a seesaw
lever
what energy travels in waves because of the sun
radiant
which energy source creates least polution
solar or wind
energy can only do what
change forms
flashlight transforms chemical to?
electrical then to light
which simple machine is a ramp
inclined plane
what energy is of moving objects
kenetic
why is hydroelectric power reliable
water is always constant
when a object drops, potential turns into what.
kinetic
when you eat food and move you body chemical energy turns into?
kinetic
how do pulleys change the work load
change direction of the force meaning theres less effort
what energy is stored in rubber bands
elastic potential energy
solar panels are not renewable, and the sun isn't always sunning AKA nighttime
does total energy of a close system ever change? *HINT think of what closed means
no
what kind of transformation of chemical energy does a car engine do
mechanical
how does a wheel and an axle reduce work
by reducing the friction from dragging something, meaning that you use less force to move it
what is the difference between kinetic and potential
kenetic is motion whilst potential is stored
explain why renewable energy is better for the long term 2 ANSWERS
doesn't run out and has low pollution
explain conservation of energy using roller coaster
high potential energy at the top and kinetic energy on the way down.
name three devices of each energy transformation
uhhh too many to list ig
spreads the force over time.