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WorksheetsScience Fair Quiz-Junior High School
Total questions: 30
Worksheet time: 15mins
Diagram 1 shows a measuring cylinder containing water.
Five identical steel balls are now lowered into the measuring cylinder.
Diagram 2 shows the new water level in the cylinder.
What is the volume of each steel ball?
6 cm3
14 cm3
30 cm3
70 cm3
The diagram shows a force being applied to a lever to lift a heavy weight.
Which change would enable the heavy weight to be lifted with smaller force?
Move the force to the right
Move the heavy weight to the right
Move the force to the left
Move the pivot to the left
A cylindrical can is rolled along the ruler shown in the diagram.
The can rolls over twice.
What is the circumference (distance all round) of the can?
13 cm
14 cm
26 cm
28 cm
Passengers are NOT allowed to stand on the upper deck of double-Decker buses.
Why is this?
They would cause the bus to become less stable.
They would cause the bus to slow down.
They would increase the kinetic energy of the bus.
They would lower the center of mass of the bus.
A telephone engineer connects a wire between two poles when the weather is very cold.
He makes the wire very loose.
The wire passes over a road.
The weather change and it becomes very hot.
What could happen to the wire and why?
The wire breaks because it contracts
The wire breaks because it expands
The wire sags and touches cars on the road because it contracts
The wire sags and touches cars on the road because it expands
A boy wears a shirt with a letter F on the front.
He stands in front of a plane mirror.
What does he see in the mirror?
When does solar eclipse take place?
the sun is between the moon and the earth
the earth is between the moon and the sun
the moon is between the sun and the earth
the moon does not lie on the line joining the sun and the earth
This planet is the Roman God of the Sea.
In Greek, it is also called Poseidon.
What is the name of this planet?
Mercury
Venus
Saturn
Neptune
Astronaut 1 uses a hammer to mend a satellite in space.
Astronaut 2 is nearby.
There is no atmosphere in space.
Compared with the sound heard if they are working on Moon, what does astronaut 2 hear?
no sound at all
quieter sound
a sound of the same loudness
a louder sound
A heavy table has six legs.
The area of cross-section of each leg is X.
The legs of the table make marks in the carpet.
These marks become deeper with increases pressure.
What would reduce the depth of the marks for the table of a fixed weight?
using three legs, each of an area smaller than X
using four legs, each of an area the same as X
using six legs, each of an area smaller than X
using eight legs, each of an area the same as X
The increasing of SO2 gas in the air can cause acid rain.
The name of SO2 compound is…
Silver oxide
Silver dioxide
Sulfur oxide
Sulfur dioxide
We can find so many example of compound in our life.
The following is covalent compound, except …
CO2
CaCl2
H2O
NO3
(NH4)2SO4 usually used for fertilizer.
The name of (NH4)2SO4 is …
Diammonium sulfate
Diammonium sulfide
Ammonium sulfate
Ammonium sulfide
Which of the following is not a compound?
CuO
CO
CO2
Co
What should you do if you spill acid?
Wash the area with base solution
Wash the area with a lots of water
Wash the area with salt solution
Wash the area with soap
Which one of the following substances is an acid?
Orange
Bleach
Distilled water
Washing powder
Some soils allow water to pass through them very quickly.
These soils drain quickly.
Other soils may hold water for a long time.
Which of the following type of soil dries out quickly after a rainstorm?
Clay
Sand
Humus
Mineral
A warning in the label of a room refresher written as:
“Beware of high pressured content, will explode in a high temperature of more than 50.”
Which of the following is NOT correct action?
Keep away from open flames
Keep the product near the stove
Do not expose to direct sunlight
Do not pierce with a sharp object
What are the processes W, X, Y and Z in the following diagram?
W: condensing X: boiling Y: freezing Z: melting
W: condensing X: freezing Y: melting Z: boiling
W: melting X: boiling Y: freezing Z: condensing
W: melting X: freezing Y: condensing Z: boiling
Alcohol and water are completely miscible.
This means when mixed together they form only one liquid layer.
Which method is used to separate alcohol from water?
crystallisation
filtration
distillation
precipitation
What does adaptation mean?
Animals and plants like their habitats
Animals and plants decide to change their habitats
Animal and plant species develop characteristics over time which help them survive their habitats
Animals and plants learn to thrive in their habitats
The area in which an organism lives is called .......
A habitat
A river
A wood
An environment
A polar bear is adapted to live in the arctic.
Which of the following is NOT true?
They have a thick layer of fat for insulation
They have big feet to produce high pressure on the snow
Their fur looks white to blend in with their surroundings
They have waterproof fur for insulation when in water
Who discovered cells?
Benjamin Franklin
Leonardo da Vinci
Albert Einstein
Robert Hooke
What is the smallest unit of life?
A membrane
A cell
A nucleus
An organism
Mushrooms, molds and yeasts are found in this kingdom.
Plant Kingdom
Monera Kingdom
Fungi Kingdom
Protist Kingdom
This is a light-sensitive tissue that lines the back of the eye.
Lens
Optic nerve
Vitreous
Retina
The fluid in your mouth is called ______.
enzymes
saliva
bile
chyme
These blood vessels return blood back into the heart.
Capillaries
Arteries
Veins
Cells
The brain is ____.
an organ
tissue
neurons
simple
