LIGHT ENERGY
People might use a lamp to help them see, but in many cases, the bulb gets quite warm. The two forms of energy being produced by the lamp are–
A light and thermal energy.
B light and mechanical energy.
C thermal and mechanical energy.
A light and thermal energy.
What is velocity ?
energy stored
The action or process of moving
The speed of something in a given direction
The speed of something in a given direction
Sound is caused by?
force
vibrations
instruments
vibrations
The transfer of thermal energy is called _____?
heat
energy
work
heat
A flashlight produces light energy by using which of the following types of energy from batteries?
Electrical
Solar
Nuclear
Electrical
All of the following objects are used to produce thermal or light energy EXCEPT –
A lamps
B ovens
C candles
D bicycles
D bicycles
What is kinetic energy?
energy stored
energy in motion
The action or process of moving
energy in motion
Sound travels FASTEST through which of these materials?
Air
Empty space
metal
metal
Heat is the transfer of ___________ energy?
kinetic
sound
thermal
thermal
A path followed by an electric current
open circuit
circuit
current
flow
circuit
Light is a form of ______________________
energy
What is mechanical energy?
A- sum of kinetic and potential energy in an object that is used to do work. It is also energy in an object due to its motion or position.
B- change in position of an object over time.
C- rate at which work is done
A- sum of kinetic and potential energy in an object that is used to do work. It is also energy in an object due to its motion or position.
Sound is a form of?
energy
What happens to the temperature of a object as it moves faster?
temperature increases
temperature decreases
temperature stays the same
temperature increases
Material that allows electric current or thermal energy to pass through easily
conductor
insulator
circuit
conductor
All of the following are producers of light except ______________
the Sun
fire
the Moon
the Moon
Energy of an object due to its position
mechanical energy
potential energy
kinetic energy
potential energy
Sound does not travel in space because
Space is too far away.
There is no matter in space.
Space is the final frontier
There is no matter in space.
On a cold, winter day, Callie rubs her hands together. Stored chemical energy is transformed into mechanical energy. Due to law conservation of energy some of the energy is also transformed into____?
solar energy
kinetic energy
heat energy
heat energy
Material that slows down or stops electric current or thermal energy from passing through
open circuit
insulator
conductor
insulator
Which of the following items would reflect the most light?
tree
mirror
brick wall
mirror
energy associated with the motion or position of an object
light energy
mechanical energy
thermal energy
mechanical energy
What medium does sound travel through slowest?
gas
solid
liquid
gas
What kind of energy is a fire?
thermal energy and light energy
To move along in a smooth, steady, continuous path or stream
insulator
conductor
flow
flow