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WorksheetsUJIAN TOPIKAL FORM 3 (SCIENCE)
Total questions: 40
Worksheet time: 20mins
Which of the following minerals is found as an element in Earth's crust ?
Bauxite
Cassiterite
Silver
Galena
Diagram 1 shows the atomic structure of mineral.
Description : like a lot of small marble arrange closely
Oxygen
Gold
Silver
Galena
Which of the following contain calcium carbonate ?
I - Coral reef
II - Elephant tusk
III - Seaweed
IV - Eggshell
I and II
III and IV
II and III
I and IV
Diagram 2 shows a cargo ship which is made of strong materials.
Which of the following is one of the strong materials ?
Cassiterite
Galena
Hematite
Calcite
Diagram 3 shows a piece of jewelry.
Description : a diamond ring
What minerals are used as the raw materials for this jewelry ?
I - Calcite
II - Bauxite
III - Diamond
IV - Quartz
I and II
III and IV
II and III
I and IV
Bauxite is a mineral consists of
I - Oxygen
II - Aluminium
III - Calcium
IV - Iron
I and II
III and IV
II and III
I and IV
Diagram 4 shows an apparatus set-up. A mixture of carbon and zinc oxide is heated up in a crucible.
What is left inside the crucible after this experiment ?
Oxygen
Carbon
Zinc
Carbon Dioxide
Diagram 5 shows the reactivity series of metals.
Au, Ag, Hg, Cu, Pb, Sn, Fe, Zn, Al, Mg, Ca, Na, K
Description : towards the right (becoming more reactive)
The position of hydrogen is in between
iron and zinc
lead and tin
zinc and aluminium
mercury and copper
How can a metal react with oxygen ?
By providing carbon as fuel
By providing heat
By providing water
By providing light
Digram 6 shows the apparatus set-up of an experiment to study the reaction between metal and oxygen.
Description :
1. There's a test tube in horizontal
2. End of test tube have Potassium manganate (VII) crystals and beside that have Magnesium Powder.
3. There's a glass wool seperate them.
4. The two reactant is heat up.
Which of the following statements are true about the reaction ?
I - Magnesium burns brightly with a white flame.
II - A whoite powder known as magnesium oxide is produced.
III - Magnesium burns slowly with a white flame.
IV - A white powder known as magnesium hydroxide is produced.
I and II
III and IV
II and III
I and IV
What is thermochemistry ?
The study of generation of heatenergy by burning fuel
The study of chemical reaction between metals and non-metals
The study of chemical subtances releasing heat to the surrounding
The study of heat change during a chemical reaction
The following chemical equation shows a process carried out by green plants.
Sunlight + Water + Carbon Dioxide = (green plants) Food + Oxygen
Which of the following statement is true ?
Photosynthesis is an endothermic process
Photosynthesis is an exothermic process
Respiration is endothermic process
Respiration is exothermic process
Which of the following situations is an endothermic reaction ?
Sitting by the campfire
Touching an ice with hand
Explosion of fireworks
Drying under the sun
Diagram 1 shows Patrick put a pack on his head because of fever.
Which of the following statements is true ?
Patrick uses a cold pack to absorb heat from his forehead
Patrick uses a cold pack to release heat from his forehead
Patrick uses a hot pack to absorb heat from his forehead
Patrick uses a hot pack to release heat from his forehead
Diagram 3 shows a 3-pin plug on an iron.
Description : Yellow And Green Strips
What is the function of wire P ?
Carries electric current from the substation to the house
Allows the electric current to flow back to the substation
Breaks the circuit when the current exceeds the limit
Allows the leaked current to flow to the earth
240V voltage will be supplied to an electric kettle with a power of 1500W . What is the value of fuse suitable to be installed onto the kettle
1 A
2 A
5 A
10 A
Diagram 4 shows the distribution system of electricity with four transformers, P, Q, R and S.
Power Station - P - Q
(From Q go two place)
Q - R - House (240V)
Q - S - Industries (415V)
Which transformers, P, Q, R and S are step-down transformers?
P, R, and S only
P and Q only
P, Q, and S only
Q, R and S only
Diagram 5 shows a 3-pin plug and the wires in the electric cable.
X = Brown
Z = Green Yellow
Y = Blue
Which of the following matches is correct ?
3 Position = Left (P), Above (Q), Right (R)
Y, X, Z
X, Z, Y
Y, Z, X
X, Y, Z
Which of the following statements explains the step-up transformer correctly ?
The primary coil has more turns of wire
Secondary coil has less turns of wire
Primary coil has less turns of wire
Secondary coil has the same number of turns of wire as the primary coil
Diagram 1 shows the circuit diagram of the transformer in a mobile phone charger.
Np = ?
Vp = 240V
Ns = 10
Vp = 5V
Calculate the number of turns in the primary coil.
24
48
120
480
Which of the following electrical appliances uses a transformer ?
Toaster
Laptop battery charger
Incasdescent lamp
Toy car
The power supply of a transformer is 12V. If the number of turns of the primary coil of the transformer is 50 and the number of turns of the secondary coil is 250, what is the output voltage ?
5V
60V
200V
600V
Diagram 2 shows the system of electricity supply from the power station to consumers.
Power Station - Transformer P - National Grid Network
What is the function of transformer P ?
To flow the same value of voltage of alternating current
To increase the voltage of alternating current
To decrease the voltage of alternating current
To automatically disconnect the voltage of alternating current
What is the colour of the live wire in a 3-pin plug ?
Yellow and green
Brown
Blue
Red
What is the meaning of work ?
Force possessed by a stationary object
Ability to do work
Product of force and displacement in the direction of force
Rate of doing work
Which of the following activities shows work is done ?
Playing guitar
Reading book
Sitting on sofa
Carry a load and walk
Which statement is correct about the Principle of Conservation of Energy ?
Energy can be created or destroyed
Energy in the object will reduce when the object is heated
Energy can be converted from one form to another
When the car stopped moving the gravitional potential energy increased
Diagram 2 shows a plasticine ball on a table.
Which of the following increases the quantity of gravitional potential energy ?
Mould the plasticine ball into a cube
Reduce the mass of the plasticine ball
Place the plasticine ball on a cupboard
Move the plasticine ball to the center of the table
Radioactive subtance Q is used by archeologist to determine the age of fossils and artifacts.
What is Q ?
Phosphorus-32
Sodium-24
Carbon-14
Cobalt-60
Diagram 3 shows the structure of an atom.
Q = position at centre
P = Position outside centre, in a circle
What is the charge of P and Q ?
P- negative , Q-positive
P-positive , Q-negative
P-negative, Q-neutral
P-positive, Q-neutral
Table 1 shows the formation of ion X from iron atom, Fe.
Subatomic Particle = Neutron, n
Number = 30
Charge = 0
Subatomic particle = Proton, p
Number = 26
Charge = +26
Subatomic particle = Electron, e
Number = 26 untill 24
Charge = -26 untill -24
Determine the name of ion X and its symbol.
Iron ion , Fe2+
Iron ion, Fe2-
Chromium ion, Cr2+
Chromium ion Cr2-
Diagram 4 shows the penetration power of a radioactive ray.
The ray can penetrate paper bu cannot penetrate Aluminium.
What is the ray ?
X-ray
Beta ray
Alpha ray
Gamma ray
The following information shows the characteristic of a phenomenon which occurs on the surface of the Sun.
- Huge flames which can reach thousands of kilometres
- Consist of helium and hydrogen
- Can be observed at the photosphere
What is this phenomenon ?
Sunspots
Solar flares
Prominence
Solar wind
Digaram 1 shows the structure of the Sun.
Description :
P = Outside the sun
R = Surface of the sun
Q = Inside the sun
Which of the following represents P, Q and R ?
P=Corona, Q=Photosphere, R=Chromosphere
P=Corona, Q=Chromosphere, R=Photosphere
P=Photosphere, Q=Corona, R=Chromosphere
P=Chromosphere, Q=Corona, R=Photosphere
Which of the following matches is correct?
Radiation zone = Prominence
Corona = Aurora
Photosphere = Sunspots
Core = Solar Flare
What will happen if the Earth is not protected by its magnetosphere?
Formation of aurora
Increase in the potential of electric power line
Disruption in the telecommunication system and navigation system
The occurence of tides
The following information describes invention X.
- Has high magnification power.
- Can observe large and distant objects in the outer space.
What is invention X?
Kaleidoscope
Endoscope
Microscope
Telescope
Which of the following can travel futher into and out of the Solar System?
Rocket
Space Probe
Satellite
Space Shuttle
Which of the following is the uses of satellite ?
I - To avoid the occurence of natural disaster
II - To control world population
III - To monitor the weather change on the Earth
IV - To increase the country's defence system
I and II
III and IV
II and III
I and IV
Which of the following satellites are launced by Malaysia for remote sensing?
I - MEASAT 1
II - TiungSAT-1
III - RazakSAT
IV - MEASAT 2
I and II
III an IV
II and III
I and IV
