WorksheetsMock prep grade8
Total questions: 52
Worksheet time: 34mins
The three types of nuclear radiation in order of increasing penetrating power are
alpha, beta, gamma
alpha, gamma, beta
beta, alpha, gamma
gamma, alpha, beta
A student used some everyday items to investigate static electricity.
Figure 1 shows a flexible plastic strip being rubbed with a cloth.
Complete the sentence (with 1 correct word).
Rubbing the plastic strip with the cloth causes the strip to become negatively charged because (a) move from the cloth onto the plastic strip.
The student hung the negative plastic strip over a wooden rod.
The ends of the strip moved away from each other.
Figure 2 shows the position of the plastic strip on the wooden rod.
What conclusions should the student make about the forces acting on the two halves of the plastic strip? (select as many as apply)
The electrostatic forces are uneven depending on mass.
The forces are even magnitude.
The forces act in opposite directions.
The forces act diagonally upwards.
The diagram shows a temperature sensing circuit used to control a heating system in a house.
What quantity does the ammeter measure? (One correct word only needed)
(a)
The diagram shows the circuit used to obtain the data needed to plot the current-potential difference graph for a filament lamp.
Why is component M included in the circuit?
To keep the current constant.
To keep the potential difference constant.
To vary the current.
To vary the bulbs resistance.
Which type of wave is illustrated in the diagram?
Longitudinal
Slinky
Transverse
Water
What is the frequency of this wave?
0.25 Hz
0.50 Hz
2.0 s
4.0 s
All waves transfer energy?
True
False
Which of the following is a danger of UV radiation?
Causes skin cancer
Causes hearing damage
Easily absorbed by water in the body’s cells
Can cause cancer of the brain
What is the function of the cytoplasm?
To control what enters and exits a cell.
It is where chemical reactions occur.
To control the activities of a cell.
It is where photosynthesis happens.
What is a specialized cell?
A cell suited to a particular job/function
A cell which has no job/function
A cell without a nucleus.
A cell with no DNA.
How is a sperm cell adapted for its function? Select all that are true.
A tail/flagella to allow it to swim to the egg.
Lots of chloroplasts to release energy for it to swim.
An enzyme in its head to break down the membrane of the egg.
Lots of mitochondria to release energy for it to swim.
Cilia are present on the surface of the cells of the trachea. The cilia of a smoker work less effectively than those of a non-smoker.
How does this affect the smoker?
Less carbon dioxide is released.
Less oxygen is released.
More bacteria enter the lungs.
More mucus is removed from the lungs.
An enzyme from the stomach that digests protein, and cooked egg white that contains protein, are placed in four test-tubes.
When the egg white is digested the mixture becomes clear.
Which tube becomes clear first?
A
B
C
D
What is the equation that links gravitational field strength (g), mass (m) and weight (W)?
Weight = Mass x Gravitational Field Strength, or W=mg
Weight = Mass / Gravitational Field Strength, or W=m/g
Weight = Gravitational Field Strength / Mass, or W=g/m
What is the equation that links distance from the pivot (d), force (F), and moment of a force (M)?
Moment of a Force = Force x Distance From The Pivot, or M=Fd
Moment of a Force = Force / Distance From The Pivot, or M=F/d
Moment of a Force = Distance / Force From The Pivot, or M=d/F
What is the equation that links distance (s), time (t) and velocity (v)?
velocity = time x distance, or v=ts
velocity = distance / time, or v=s/t
velocity = time / distance, or v=t/s
What is the equation that links density (ρ), mass (m) and volume (V)?
Density = Volume x Mass, or ρ=Vm
Density = Mass / Volume, or ρ=m/V
Density = Volume / Mass, or ρ=V/m
What is an advantage of sexual reproduction?
Is a fast process
Is energy efficient
Produces variation
Only one parent needed
Which of the following is an inherited disorder?
Malaria
HIV
Measles
Cystic fibrosis
An organism had 24 chromosomes in the nucleus of one of its body cells.
How many chromosomes would there be in a sperm cell and a skin cell from
the same organism?
sperm cell: 12, skin cell: 12
sperm cell: 24, skin cell: 24
sperm cell: 12, skin cell: 24
sperm cell: 24, skin cell: 12
Electric current is measured in ____________.
Newtons (N)
Amperes (A)
Hertz (Hz)
Volts (V)
What three minerals are attracted to a magnet?
Gold, copper, cobalt
Cobalt, aluminum, silver
Iron, copper, aluminum
Iron, nickel, cobalt
How can you increase the magnetic field strength in an electromagnet?
Increase the number of coils.
increase the voltage
increase the current by reducing the resistance of the coil
all of the above
Gaseous exchange happens because of...
Osmosis
Respiration
Diffusion
Semi-permeable membranes
The graph shows the effect of the concentration of carbon dioxide on the rate of photosynthesis in tomato plants at 20 °C.
Question
What is the maximum rate of photosynthesis of the tomato plants shown in the graph?
(a)
A student investigated the effect of temperature on the rate of photosynthesis in pondweed.
The diagram shows the way the experiment was set up.
Question
The student needed to control some variables to make the investigation fair.
State two variables the student needed to control in this investigation.
(a)
Lithium chloride + Iron → ?
Lithium chloride + Iron (No change)
Iron chloride + Lithium
Lithium oxide + hydrogen
What type of reaction is shown by this word equation?
lead nitrate + sodium → sodium nitrate + lead
Decomposition
Thermite
Displacement
Neutralisation
Which of the following is the right order?
Pollination -- Dispersal -- Germination -- Fertilisation
Pollination -- Fertilisation -- Germination -- Dispersal
Pollination -- Dispersal -- Fertilisation -- Germination
Pollination -- Fertilisation -- Dispersal -- Germination
When we prevent overcrowding of plants, we reduce the competition for ________________________________________.
Water, Minerals and Light
Water, Nutrients and Minerals
Water, Nutrients, Light and Minerals
Water, Light and Space
The stamen is made of the
Anther & filament
Anther & petal
Fliament & ovary
Ovary & style
