Double points!
True or False..Water is the best conductor of electricity
True
What is noise pollution?
Continuous loud sounds over a long period of time
Small,thin or short,thick.Which will produce a higher sound?
small,thin
Sound bounces off a _____ surface but is absorbed when it hits a _____ surface
hard surface,soft surface
A tornado is caused by a spinning storm called a ____
supercell
Light travels in...
straight lines,rays
As sound waves move away from their source,their ...
intensity decreases
What is pitch?
How high or low a sound is
By giving less energy
Warm air mixes with cold air causing a .....
tornado
Sound travels in all...
directions away from it's source
Hitting an object harder will make the volume...
What is intensity?
How ;loud or soft a sound is
Matter is
anything that has volume and mass
The process of evaporation through the back of leaves is called...
transpiration
sound is measured in?
decibels
Sound travels fastest through...
solids
Which will damage hearing? aeroplane taking off or a conversation?
aeroplane taking off
An object is red because...
Red is the only color reflected
Jamaica is north ____ of Colombia
north west
the amount of vibrations that occur in a second is?and what does it affect
frequency,pitch
Name a property of materials
transparency,absorbancy,strength,flexibility,magnetic,electrical conductivity,heat conductivity
Do you want free points?
Yes=subtraction of points|no=920+ points
We see the lightning before we hear the thunder.This is an example to show that...
Light travels faster than sound
What is water vapor in it's solid form?
ice