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WorksheetsScienceQuiz2018
Total questions: 60
Worksheet time: 23mins
Who was the first Chinese to obtain the Nobel Prize?
Samuel Ting
Charles Kao
Franklin Yang
Roger Tsien
Light bulbs change electrical energy into
chemical energy
heat and chemical energy
heat and light energy
light energy
The following picture shows a hazard label, what danger does the chemical pose?
Irritant
Explosive
Toxic
Corrosive
Vegetables mainly consist of
Protein
Vitamin
Metal
Dietary fibre
Natural wind is produced by
the difference in humidity
the difference in air pressure.
the difference in potential energy of air
the difference in landscape.
Which of the following animals does not belong to the bird family?
Penguins
Chickens
Bats
Eagles
Which of the following elements is added to kill bacteria in tap water?
Fluorine
Chlorine
Oxygen
Iodine
Which of the following physical properties of carbon dioxide is INCORRECT?
It is odourless
It is colourless
It is acidic
It is less dense than air
Hydrogen is dangerous because it is ____?
corrosive.
irritating.
toxic.
explosive.
When was the first 3D structure of DNA discovered?
1950
1953
1983
1992
What should we wear when handling concentrated acid?
A pair of protective gloves
A pair of contact lens
A face mask
All of the above
Which of the following involves an uncontrolled energy change?
Burning gas with a gas stove at home.
Explosion of fuel in car engine.
Using an electric motor.
Forest fire.
Which of the following obtained two unshared Nobel Prizes ?
Linus Carl Pauling
John Bardeen
Frederick Sanger
Madame Curie
Sound is produced by____
the movement of particles.
the mass of particles.
the vibration of particles.
the electrostatic attraction between particles.
What form of energy does a battery store?
Chemical energy
Light energy
Electrical energy
Heat energy
What are the elements that combine to make table salt?
Sodium and Oxygen
Sodium and Hydrogen
Sodium and Nitrogen
Sodium and Chlorine
By volume, how many percent of oxygen are found in air?
78%
40%
21%
3%
Chemicals with this hazard warning label are...
Inflammable
Irritant
Flammable
Toxic
When we see an unknown colorless liquid left on a bench, which action should be taken?
Use tissue paper to remove it.
Use distilled water to wash it away.
Use sodium chloride to wash it away.
Use a hair dryer to blow it away.
Which of the following is NOT a part of female reproductive organ?
Ovary
Vagina
Oviduct
Bladder
Which diagram best shows the position of a piece of ice in water
1
2
3
4
Which invention of Charles Kao won the Nobel Prize?
Superconductor
Integrated Circuit
Optical fiber
Lon trap
Coral belongs to
the plant kingdom
the animal kingdom
neither the plant nor the animal kingdom
both the plant and the animal kingdom
Chemicals with this hazard warning label are _________.
.
.
What is the dissolved gas in soft drinks?
Air
Oxygen
Nitrogen
Carbon dioxide
Which group of animals contains ONLY reptiles
snake, lizard, frog
turtle, salamander, crocodile
lizard, snake, crocodile
crocodile, salamander, frog
Which of the following metals is the densest at the same temperature?
1 kg of gold
3kg of silver
5kg of copper
7kg of lead
The pH value of pure water at 25℃ is
0
1
7
14
A student designed the following experiment as shown below.
To study the activities of cockroaches
To study the eating habit of cockroaches
To study the breathing of cockroaches
To study the reproduction of cockroaches
An eye wash bottle is filled with
Distilled water
Salt solution
Tap water
Alcohol
What is the freezing temperature of water
100 ℉ (Fahrenheit)
32℉ (Fahrenheit)
97℉ (Fahrenheit)
0℉ (Fahrenheit)
Which of the following liquid contains acid?
Water
Vinegar
Ammonia
Sodium hydroxide
What is the most abundant element in the earth crust?
Oxygen
Carbon
Hydrogen
Nitrogen
Which of the following is a non-renewable energy source?
Solar power
Wind power
Nuclear power
Hydroelectric power
What does “light year” measure?
Time
Weight
Rate
Distance
Tom has three objects that are the same shape and size. He puts the three objects in a beaker of water. The results are shown on top.
What can Tom conclude about the weight of the objects?
X is lighter than Y.
X is heavier than Y and Z.
Y and Z have the same weight.
X is lighter than Z but heavier than Y.
How can the life of a battery be extended
Storing it at low pressure region.
Storing it at high pressure region.
Storing it at low temperature region.
Storing it at high temperature region.
Birds are different from insects in that birds...
lay eggs.
have legs.
have wings.
have feathers.
Most chemical energy released when gasoline burns in a car engine is converted to...
heat energy
sound energy
kinetic energy
electrical energy
What do birds, bats and butterflies have in common?
Feathers
Hairs
Wings
Internal skeleton
The diagram below shows three solids of the same size floating on water.
Which solid has the greatest density?
Solid A
Solid B
Solid C
They have the same density.
A girl rolls a heavy ball and it knocks down all ten bowling pins.
Which of the following correctly describes the energy conversions?
kinetic energy sound energy chemical energy
kinetic energy sound energy potential energy
chemical energy potential energy sound energy
chemical energy kinetic energy sound energy
The diagram on top shows the structure of a plant cell.
Which of the following combinations is correct?
Structure S: chloroplast
Structure R: nucleus
Structure T: vacuole
Structure S: vacuole
Structure R: nucleus
Structure T: chloroplast
Structure S: nucleus
Structure R: chloroplast
Structure T: vacuole
Structure S: nucleus
Structure R: vacuole
Structure T: chloroplast
Which of the following is not usually present in fresh air?
Carbon monoxide
Nitrogen
Argon
Neon
What should be done if your finger is cut by a piece of broken glass?
Wash it with alcohol.
Squeeze the blood out.
Tell your teacher and clean it.
Remove the broken glass and tell your teacher.
The basic unit of life is
Tissue
Cell
System
Organ
Breathed air contains _________than unbreathed air.
Less oxygen
Less carbon dioxide
More nitrogen
More oxygen
Length and time are examples of
Units
hypotheses
measurements
conclusions
Chemicals with this hazard warning label are ___________.
.
.
Who invented the Penicillin?
Peter Smalling
Paul Simon
Mary Banting
Alexander Fleming
What is the boiling point of liquid nitrogen?
196degree Celsius
123degree Celsius
45degree Celsius
0degree Celsius
Walrus does not have thick coat of fur (like polar bear) but it can survive in extreme cold regions.
What does the walrus have that helps it survive in cold regions?
Flippers
Tusks
Whiskers
Fat layers
What is the main substance of clouds?
Air
Water
Oxygen
Nitrogen
Burning or logging naturally in forests is known as
inforestation.
deforestation.
reforestation.
beforestation.
How do batteries produce electricity?
Release stored electrical energy.
Convert heat energy to electrical energy.
Convert electrical energy to kinetic energy.
Convert chemical energy to electrical energy.
What is the 23rd pair of chromosome in a normal female?
YX
XX
XY
YY
Susie has three ice cubes of different sizes.
Cubes 1, 2 and 3 will float.
Cubes 1, 2 and 3 will sink.
Cube 1 will float while cubes 2 and 3 will sink.
Cubes 1 and 2 will float and cube 3 will sink.
Most chemical energy released when gasoline burns in a car engine is converted to
Heat energy
Kinetic energy
Electrical energy
Sound energy
Which of the following diagrams show the correct way of using an eye wash bottle?
.
.
What should be done at once if you break a glass bottle?
Pick up the broken glass immediately.
Wash the broken glass into the sink.
Tell your classmates nearby and your teacher..
Pick up the broken glass and then tell your teacher
