Energy 1
Define energy
the ability to do work
This is the abbreviation for kinetic energy.
K.E
The biggest source of light energy
sun
Energy possessed by a drop of water about to fall from the top of a waterfall.
Potential energy
RPUMRATETEE
temperature
energy in motion
kinetic energy
Energy can not be lost or destroyed, only transformed into a different form of energy. True or False
True
The abbreviation for potential energy.
U
AHMRTEL
thermal
This Scottish engineer was the first to use the term potential energy.
William Rankine
Type(s) of energy used by an oven use to bake cakes.
Electric energy and heat energy
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.
TEPLTIOAN
potential
The Italian physicist who is generally credited with having developed the first operable battery.
Alessandro Volta
SI unit of potential energy
joules
If there is friction between 2 moving bodies, then mechanical energy is converted into............
heat
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
Where does the word energy originate from?
Ancient Greek word energeia, which appeared for the first time in the 4th century BCE works of Aristotle.
ORTICENSANOV
conservation
Factors on which power depends
amount of work done
time taken by source to do the work
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
SUMOITNBCO
combustion
The term kinetic comes from this Greek word.
kinētikos
Two girls climb steps in 40 s and 30 s respectively for the same job. The ratio of the power spent by them will be ..........
3:4
This form of energy is caused by object's vibrations that transmits energy through the air around it.
sound energy
TOOANFNAIMRSRT
transformation
First person who proposed the law of conservation of energy?
Émilie Du Châtelet
Later by Julius Meyer, James Joule and a couple of others.