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Student exam questions
Question 1
• Out of nuclear power stations and coal fired
stations, which produces more CO2 ?
• Answer: Coal fired
Question 2
• Which heart and blood vessles are part of
which body system ?
• Answer: The circulatory system
Question 3
• What 2 particles are found in the centre of an
atom?
• Answer:
Protons and Neutrons
Question 4
• An element consists of
a)
b)
c)
d)
One type of atom
Two or more atoms
A group of electrons
None of the above
Answer: A
Question 5
• In all chemical changes:
a)
b)
c)
d)
Atoms are rearranged to form new substances
New atoms are formed
Atoms are destroyed
Mass is lost
Answer:
A
Question 6
• Atoms with the same number of protons
belonging to the same element is called an ?
• Answer: Isotope
Question 7
• Balance the following equation
CH4 + ? O2
CO2 + ? H2O
Answer:
CH4 + 2 O2
CO2 + 2 H2O
Question 8
• Ionic is a non metal and a metal bonding,
covalent is bonding by 2 non-metals
State which is a ionic and covalent bonding
a) Carbon + Oxygen = Carbon Dioxide CO2
b) Sodium + Flurine = Sodium Fluride NaF
Answer: a) covalent
b) ionic
Question 9
• What 2 gases contribute to the green house
effect the most?
a) Oxygen + Nitrogen
b) Nitrogen + Methane
c) Methane + Carbon Dioxide
d) Carbon Dioxide + Oxygen
Answer: c
Question 10
• What is it called when two plates collide into
each other and oceanic plate dives underneith
continental plate?
• Answer:
Subduction zones
Question 11
• The build up of chemicals in animals over time
is ?
a) Photosynthesis
b) Bioaccumulation
c) Biomass
d) Biogas
Answer: b
Question 12
• If the speed of light is 300, 000 kilometres per
second and the moon is 384 403 from earth. How
long does it take for light reflected off the moon
to reach earth?
Answer: speed = distance/time
time = distance/speed
t = 384,403 km/300,000 km/s
= 1.3 seconds (approx)
Question 13
• Which of the following causes mid ocean
ridges and rift valleys ?
a) Transform fault zones
b) Spreading zones
c) Collision zones
d) None of the above
Answer: b
Question 14
• Ohm’s Law states that:
Voltage + current x resistance (V=IR)
Find the voltage used when a resistor of 10 Ohm’s
has a current of 2A flowing through it
Answer: V=IR
= 2x10
= 20 volts