science
The flow of electrons through a wire is a(n)
electric current
the water in swimming pool tends to be warmer in the daytime and cooler at night. what natural source of energy causes this difference?
solar energy
what energy transformation occurs when an electrical fan is turned on?
electrical to motion
Mr. Gates has a warm metal block. What equipment should he select to measure a possible change in the thermal energy of the block?
thermometer
can you hear someone yell in space?
no
when a string on a guitar vibrates it produces
sound energy
what charge does a proton have
positive
Mrs. Taylor made toast for breakfast by putting a slice of bread into the toaster and turning the toaster on. Which energy transformation did she use to make a piece of toast?
electrical to thermal
if you have a circuit and you unplug one lightbulb and the rest go out, what kind of circuit did you have
series circuit
can you see a flashlight in space?
yes
when the sun increases the total kinetic energy of the particles in your skin, your_____________________ increases.
thermal energy
what charge does a neutron have
neutral
Objects can lose energy. Which answer describes an example of the mechanical energy of a material decreasing
A- eggs cooking in a pan
B- water freezing
C-snow melting
D- a ball bouncing
D- a ball bouncing
which is the definition to conduction
A- the transfer of energy in waves without matter to carry it
B-the transfer of energy by currents in a liquid or a gas
C- the transfer of energy between particles that are in contact.
c
something that prevents the flow of electricity
insulator
The type of energy released when a match burns
chemical energy
what charge does a electron have
negative
Which type of energy does the book have because of its position on a shelf
potential
which is the definition to convection
A-the transfer of energy in waves without matter to carry it
B-the transfer of energy by currents in a liquid or a gas
C-the transfer of energy between particles that are in contact.
B
something that allows electric current to flow easily
conductor
the total amount of potential and kinetic energy in a moving car is its
mechanical energy
Luke tapes a piece of string to each of two ping-pong balls. He hangs the balls so that they are close to one another but do not touch. Later, he finds that they have pulled together. They are now touching. What could explain why the two balls are now touching?
they have gained opposite charges
what kind of energy does a book have as it falls to the ground?
kinetic and potential...changing from potential to kinetic or mechanical
which is the definition to radiation
A-the transfer of energy in waves without matter to carry it
B-the transfer of energy by currents in a liquid or a gas
C-the transfer of energy between particles that are in contact.
A
list all the forms of energy a microwave can turn electrical energy into
light
sound
thermal
motion