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GRADE 8 SCIENCE
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As the prey population increases, what happens to the predator population? Suggest one reason why this might happen.
The predator population increases. because there is more food available
what the angle with the upward arrow called?
angle of reflection
what the angle with the downward arrow called?
angle of incidence
Give and explain two (2) factors that affects resistance.
temperature, width of wire, length of wire, type of the material.
The current through a bulb is 0.5 A when the voltage across it was 19 V, what is the resistance?
r= 19/0.5 =38 ohms
Write the word equation for resistance.
RE= voltage / Current
Give one difference between chemosynthesis and photosynthesis
Chemosynthesis requires chemical reaction but photosynthesis requires sunlight...
Give one difference between aerobic and anaerobic respiration.
aerobic uses oxygen, anaerobic doesn't....
what's the answer?
Nitrogen, Potassium Phosphorus
name te law
Ohm's law
Yes or No?
Yes
what's the equipment?
Voltmeter
what's the answer?
Periodic table
True or false?
False
True or False?
True
what's the answer?
anaerobic respiration
what's the answer?
A= alveoli
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