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WorksheetsScience House Competition
Total questions: 40
Worksheet time: 20mins
Which type of engineering focuses on designing and constructing buildings and structures?
Civil engineering
Mechanical engineering
Electrical engineering
Aerospace engineering
Which type of engineering involves designing and building robots?
Mechanical engineering
Robotics engineering
Electrical engineering
Aerospace engineering
Which of the following animals can regenerate a lost tail?
Cat
Dog
Lizard
Rabbit
Which material is commonly used in 3D printing?
Plastic
Glass
Wood
Metal
Which energy source involves capturing energy from sunlight?
Solar energy
Wind energy
Hydroelectric energy
Nuclear energy
What is the smallest unit of life called?
Tissue
Organ
Cell
Organism
Which of the following is the largest organ in the human body?
Heart
Skin
Brain
Liver
What is the main function of a gear?
To amplify speed
To transmit motion
To store energy
To generate heat
Which of the following is the powerhouse of the cell?
Nucleus
Cytoplasm
Mitochondria
Golgi apparatus
What is the main purpose of a bridge?
To provide shelter
To cross rivers or valleys
To generate electricity
To grow crops
Which instrument measures sound waves?
Thermometer
Anemometer
Seismograph
Sonometer
Which simple machine is often used to lift heavy objects?
Lever
Screw
Wedge
Inclined plane
Which of the following is responsible for carrying oxygen in our blood?
Platelets
Red blood cells
White blood cells
Plasma
What is the primary purpose of a pulley?
To amplify force
To transmit motion
To convert energy
To change direction
Which of the following is a cold-blooded animal?
Dog
Snake
Lion
Penguin
Which color of light travels the fastest through air?
Red
Blue
Green
All colors travel at the same speed
What type of lens can focus sunlight to start a fire?
Convex
Concave
Cylindrical
Fresnel
What happens to the air pressure inside a sealed container when you heat it?
It decreases
It stays the same
It increases
It depends on the size of the container
Which of the following is NOT a sense organ?
Eye
Ear
Tongue
Lungs
What is the hard outer layer of bones called?
Cartilage
Ligament
Tendon
Periosteum
Which engineering discipline involves designing and building airplanes and spacecraft?
Mechanical engineering
Aerospace engineering
Electrical engineering
Environmental engineering
Which everyday object defies gravity the most?
Helium balloon
Airplane
Hot air balloon
Rock
What force attracts objects towards each other, even if they're not touching?
Friction
Magnetism
Gravity
Electromagnetism
What scientific principle explains why hot air balloons rise?
Warm air is lighter than cold air
Balloons displace air and create lift
Balloons are filled with helium
All of the above
Why does ice float in water even though it's made of the same substance?
Ice is less dense than liquid water
Ice expands when frozen
Water is heavier than ice
Ice is colder than water
Which of the following is a renewable energy source?
Coal
Natural gas
Solar power
Nuclear power
What is the function of a circuit breaker in an electrical circuit?
To control the flow of current
To store electrical energy
To amplify electrical signals
To protect against overload or short circuits
What allows a submarine to go deeper underwater?
Inflating balloons inside
Pumping out water from ballast tanks
Using its propeller
All of the above
What is the process by which plants make their food called?
Photosynthesis
Respiration
Transpiration
Digestion
Why does a spinning object wobble when it starts to slow down?
It loses its balance
Its angular momentum decreases
Friction increases
Both B and C
Which of the following is the earliest applications of chemistry:
Medicine
nanotechnology
set fire
make gold
Ancient Egyptian used chemistry in ...............:
fertilize crops
purifying water
mummifying their dead
building pyramids
One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?
1t
1kg
500g
none
The only letter which is not present on the periodic table is _______
A
D
J
K
To what temperature, in degrees Celsius, would you have to heat a diamond before it melted?
4800 ℃
2500 ℃
3700 ℃
700 ℃
Which gas can be used to fill balloons, and to effect a comedy voice if inhaled ...?
Carbon Dioxide
Nitrogen
Helium
Oxygen
Which element gives fireworks their vibrant green color?
Barium
Copper
Sodium
Strontium
Which is the only metal to be in liquid form at room temperature （25℃）?
Iron
Aluminum
Mercury
Gold
What is the most abundant element in the universe?
hydrogen
oxygen
sodium
magnesium
Which gas is responsible for the unique smell of a freshly cut grass?
methane
oxygen
chlorine
carbon dioxide
