light
How fast does light travel?
A) 300 kilometres per second
B) 300,000 kilometres per second
C) 3,000 kilometres per second
D) 30,000 kilometres per second
B) 300,000 kilometres per second
In which medium does sound travel fastest?
A) Water
B) Air
C) Steel
D) Vacuum
C) Steel
When was the world’s first electric car built?
A) 1890s
B) 1830s
C) 1920s
D) 1900s
B) 1830s
How hot is the core of the Earth compared to the surface of the Sun?
A) Same temperature
B) Cooler than the sun
C) Hotter than the sun
D) Slightly warmer than the sun
C) Hotter than the sun
How many Earths could fit inside Jupiter?
A) About 10
B) About 500
C) About 1,300
D) About 10,000
C) About 1,300
Which colour of light has the longest wavelength?
A) Blue
B) Green
C) Red
D) Yellow
C) Red
What was the loudest sound ever recorded?
A) A jet engine
B) The eruption of Krakatoa volcano
C) A thunderclap
D) A rocket launch
B) The eruption of Krakatoa volcano
How hot is a lightning bolt compared to the surface of the sun?
A) About the same temperature
B) 2 times hotter
C) 5 times hotter
D) 10 times hotter
C) 5 times hotter
Which type of heat transfer happens through liquids or gases?
A) Conduction
B) Convection
C) Radiation
D) Induction
B) Convection
How long would it take to reach the Moon if you travelled at 100 km/h?
A) 1 day
B) 2 days
C) 4 days
D) 7 days
C) 4 days
What creates a rainbow?
A) Clouds forming shapes in the sky
B) Light bending through water droplets
C) Air pressure variations
D) Sunlight reflecting off the moon
B) Light bending through water droplets
Which animal can hear sounds at higher frequencies than humans?
A) Dolphins
B) Bats
C) Lions
D) Cheetahs
B) Bats
What animal can generate an electric shock of up to 600 volts?
A) Electric eel
B) Electric fish
C) Electric octopus
D) Electric frog
A) Electric eel
What is the hottest recorded temperature on Earth?
A) 50°C
B) 56.7°C
C) 70°C
D) 60°C
B) 56.7°C
Which planet is the hottest in our solar system?
A) Mercury
B) Venus
C) Mars
D) Jupiter
B) Venus
How many times can light travel around the Earth in one second?
A) 1 time
B) 7.5 times
C) 10 times
D) 5 times
B) 7.5 times
Why can you hear an echo in large, empty places?
A) The sound amplifies
B) The sound travels directly back to you
C) The sound bounces off surfaces
D) The air carries the sound farther
C) The sound bounces off surfaces
Who made the light bulb practical for everyday use?
A) Nikola Tesla
B) Benjamin Franklin
C) Thomas Edison
D) Michael Faraday
C) Thomas Edison
Which of the following can be used to measure the temperature of objects from a distance?
A) Thermometer
B) Thermal camera
C) Barometer
D) Hygrometer
B) Thermal camera
What is the Sun made of?
A) Solid metal
B) Water and gases
C) Hot gases, mainly hydrogen and helium
D) Rocks and dust
C) Hot gases, mainly hydrogen and helium
What is a laser?
A) A type of flashlight
B) A beam of light that is focused and amplified
C) A light source that creates rainbows
D) A natural source of light like the sun
B) A beam of light that is focused and amplified
What is the frequency range of sounds that humans can hear?
A) 10 Hz to 10,000 Hz
B) 20 Hz to 20,000 Hz
C) 100 Hz to 1,000 Hz
D) 1 Hz to 10,000 Hz
B) 20 Hz to 20,000 Hz
What happens when you put your finger in a light socket?
A) You turn off the electricity
B) You complete the circuit, allowing current to pass through your body
C) It doesn't do anything
D) The light turns on
B) You complete the circuit, allowing current to pass through your body
How does heat move through space?
A) Conduction
B) Convection
C) Radiation
D) Reflection
C) Radiation
How many stars are estimated to be in the universe?
A) About 1 billion
B) About 100 billion
C) More than the grains of sand on Earth
D) About 1 trillion
C) More than the grains of sand on Earth