WorksheetsForm 2 Science UASA Section A (Set 2)
Total questions: 20
Worksheet time: 30mins
Diagram 1 shows three organisms. The similarity of the organisms above is
warm blooded
lay egg
nursing their youngs
undergo internal fertilisation
Diagram 2 shows a water heater that uses a solar panel. What can be done to reduce the heat loss from the water in the tank at night?
Unplug the pump connecting solar panel and tank
Increases the volume of cold water
Connect the tank to an electric source
Cover the tank with a thick cloth
Two similar balloons hang side by side. Both balloons are rubbed with wool cloth. Which diagram shows the condition of the balloon after being rubbed?
Which of the following statements about enzyme is not correct?
Bile juice is not an enzyme.
Protease enzyme digests maltose into glucose.
Lipase enzyme digests fat into fatty acids and glycerol.
Amylase enzyme digests starch into maltose.
Diagram 3 shows an electric circuit. What is the reading of the ammeter?
3.0 A
0.1 A
1.5 A
2.0 A
A polythene rod is rubbed with a cloth. The rod becomes positively charges because of the movement of electric charges. Which of the following pairs shows the correct direction of the charge movement?
Electron - From cloth to rod
Electron - From rod to cloth
Proton - From cloth to rod
Proton - From rod to cloth
Diagram 4 shows levers J, K and L. Choose the correct statement based on the diagram above.
Least effort is needed for lever J
Least effort is needed for lever L
More effort is needed to lift up rock in lever K than in lever J
The least effort is needed when the distance of effort to fulcrum is equal to the distance of load to fulcrum
A straight conductor is connected to a power supply as shown in diagram 5. The direction of magnetic field created can be determined using
Bar magnet
Solenoid
Right hand grip rule
Determining whether the current is flowing clockwise or anti-clockwise
Table 1 shows the distances of Neptune and the Earth from the Sun. Given that the Earth's distance from the Sun is 1.5x108 km, find the distance between Neptune and the Earth, in km.
4.05 x 10-9 km
4.35 x 109 km
4.5 x 109 km
4.65 x 109 km
Bellatrix is a very hot star with temperature of 21 500K. Its colour is
Yellow
White
Bluish-white
Red
An aluminium can containing water is heated until the water boils and was put into cold water. After a while, it was observed that the aluminium can has changed shape as shown in diagram 6. Which of the following statements is correct based on the phenomena above?
Atmospheric pressure outside the can is higher than inside the can.
Air particles outside the can has higher volume.
Atmospheric pressure outside the can is low.
Air inside the can increases.
The information below explains about the stages in the formation of stars.
J - Thermonuclear reaction occurs.
K - The temperature and pressure increase in the core of nebulae.
L - A ball of gas containing high heat and light energy is formed.
M - Gravitational pull collects hydrogen gas and dust.
The correct order of stages in the formation of stars is
K, M, J, L
M, K, J, L
J, M, K, L
K, J, M, L
Sarah is going to take her children to the beach this weekend. She planned to get a huge umbrella to reduce heat from the Sun. Which of the following criteria can be taken into consideration when choosing the umbrella?
I Type of material
II Height of the umbrella
III Colour of the umbrella
IV Flexibility of the umbrella
I and III
II and III
I, II and III
All of the above
Diagram 8 shows a railway track. The railway track is connected with small spaces in between the track connector to ensure
The track expands in cold weather.
The trains can move in correct direction.
The track expands in hot weather.
The track absorbs heat from the train's wheel.
The process of nuclear fusion in the Sun's core changes hydrogen to
Helium
Nebulae
Argon
Black hole
Which of the following are true about sound wave?
I Cannot travel without medium
II Cannot be absorbed
III Produced by frictional force
IV Travel at different speed in different mediums
I and IV
II and III
II and IV
All of the above
Which of the following is related to Doppler effect?
Placing a carpet in a room may reduce the loudness of sound in the room.
Dolphins produce high frequency sound to communicate with each other.
Sound frequency of a patrol car reduces when it is getting further from a listener.
Bats determine the distance of its prey by producing sound waves and wait for the sound to be reflected back.
The following is the effect is the Earth rotates slowly or stops rotating, except
Some part of the Earth will be hit by massive tsunami.
The Earth will experience long day and night.
The Earth will experience extreme weather.
Gravitational pull of Earth no longer exist.
The following information describes about object X in our Solar System.
∘ Known as small planets
∘ Made of large rock
∘ Orbiting the Sun
What is object X?
Asteroid
Comet
Meteoroid
Star
Which of the following is correct about the difference between meteoroid and meteorite?
Meteoroid - Meteors that burn incompletely
Meteorite - Meteoroids that enter the Earth's atmosphere
Meteoroid - Rocks and small metals that orbiting the Sun
Meteorite - Meteoroids that enter the Earth's atmosphere
Meteoroid - Rocks and small metals that orbiting the Sun
Meteorite - Meteors that burns incompletely and reach the Earth.
Meteoroid - Meteors that burn incompletely
Meteorite - Rocks and small metals that orbiting the Sun
