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