WorksheetsUNIT-7- ENERGY 4º
Total questions: 15
Worksheet time: 8mins
When an object moves, it has...
Electrical energy
Kinetic energy
Light energy
Sound energy
Sound energy is made by...
light
movement
electricity
vibrations
Light cannot pass through it, These materials reflect or absorb the light...
Translucent materials
Transparent materials
Opaque materials
Light passes through these materials but the image is not clear...
Translucent materials
Transparent materials
Opaque materials
Light passes through these materials so we can see the image clearly
Translucent materials
Transparent materials
Opaque materials
It is the energy that produces heat
Sound energy
Electric energy
Thermal energy
kinetic energy
They are heat insulators
sound can travel through solid, opaque objects
True
False
Heat conductors...
transfer from a warm substance to a cooler substance.
do not transfer heat well
can transfer heat quickly
Light travels at about...
120 km per hour
100000 km per second
300000 km per second
It is used to distinguish instruments and sounds
light energy
timbre
chemical energy
opaque
It can be loud or quiet
pitch
intensity
tone
timbre
it can be high or low
intensity
pitch
tone
timbre
It is the energy in lightbulbs and in things that use batteries.
chemical energy
kinetic energy
electrical energy
thermal energy
It is the energy in things that produce light
light energy
wind energy
thermal energy
kinetic energy
