In big cities, the traffic, the constructions, the people talking, etc, create ....................
Noise pollution.
What is the name of this phenomemon?
Refraction
A FROSTED GLASS is an example of translucent material. True or false?
True.
A bird flying has...........energy.
Kinetic
Digestion is a natural process that produces..............energy.
Chemical
A radiador has..........energy.
Thermal
Living and non-living things need energy. True or false?
True
Light CAN'T TRAVEL through opaque materials. True or false?
True.
Renewable or non-renewable? "They are UNLIMITED and DON'T POLLUTE (contaminate) air and water"
Renewable
Sound comes from vibrations. These vibrations produce..........that travel through ........., .......... and other materials.
Waves/ Air/ Water.
Renewable or non-renewable? "They are LIMITED and will run out in the future"
Non-renewable
We CAN'T SEE through transparent materials. True or false?
False. We CAN SEE:
The Sun produces............ and..........energy.
Light and thermal.
A person playing the piano produces..............energy.
Sound
Batteries give us............energy.
Electrical
Light travels VERY SLOWLY. True or flase?
False. It travels VERY FAST.
Lght travels FASTER than sound. True or false?
True
What is the name of this phenomemon?
Reflection
Say 3 examples of renewable energy sources.
Solar energy, wind energy, hydroelectric energy and biomass.
We (humans) need energy to......
Run, eat, dance, write, study, do the homework...
Renewable or non-renewable? "They POLLUTE (contaminate) air and water"
Non-renewable