Biology
The process where organic matter is broken down and goes back to the soil is called__________.
decay
The Sun heats the sea and some of the water becomes vapor that collects as clouds. When these are blown over high ground, they release water as rain in the process known as__________.
Precipitation
Two or more substances mixed together but not joined chemically from a/an____________.
Mixture
Sound waves can only travel through a medium. It travels the fastest in__________
Solid
The series of wave-like muscular movements which moves the food down the alimentary canal is called________
Peristalsis
What type of eclipse occurs when the Moon passes between the Sun and the Earth?
Solar Eclipse
The process by which acid and bases are combined is called _______.
neutralization
The fastest racing cars have light bodies with powerful engines. A race car with a small mass can be accelerated rapidly. In what Law of Motion does this conforms?
Law of Acceleration
The anvil, hammer, and stirrup make up the bones of the_______.
Ears
The __________ is a layer of the atmosphere which has a beneficial effect of absorbing harmful uv rays?
Stratosphere
Clear water still contains bacteria and other organism. What chemical is commonly added to sterilize it?
chlorine
Waves that has the longest wavelengths are used to carry telephone calls, mobile phone transmission and picture signal over long distance are_______.
Radiowave
If your hand touches a hot object, you will put it away immediately. Signals from the pain cells travel to the spinal cord. There, they set up signals in the nerve going back to the hand muscles that jerk the hand away. This action is known as_____________.
Reflex Action
Layers of pollutants in the air caused by exhaust gases from automobiles which react in sunlight are called ___________.
Carbon Monoxide
These substances control the rates of chemical reactions
Catalysts. Catalysts are substances that control the rates of chemical reactions.
Light travels with a speed of approximately _____________.
300,000 m/s
Enzymes are special proteins that hasten chemical reaction; they speed up chemical reactions without themselves getting directly involved. What is an enzyme that is found in saliva?
Amylase
The lithosphere is broken into about two dozen segments of irregular size and shape called ______.
Plate tectonics
The measure of the average kinetic energy of the particles in matter is ______.
temperature
Instrument used to measure atmospheric pressure
Barometer