ASTRONOMY
What is the closest star to planet Earth?
The Sun
What are the main elements that make up table salt?
Sodium & Chlorine
(NaCl)
What does the acronym LED stand for?
Light Emitting Diode
Which organelle is known as "the powerhouse of the cell"?
Mitochondria
What is the name of the process of splitting atoms?
Nuclear fission
Which planet has the longest year?
Neptune
What are the main constituents of an atom?
Proton, neutron, electron
What is a halfword?
16 bits (or 2 bytes)
What molecule makes plants green?
Chlorophyll
what is the approximate wavelength of red light (in nm)?
700nm
(625nm - 750nm)
On average, what is the closest planet to Earth?
Mercury
What compound has the chemical formula CH4?
Methane
What is Alan Turning famously know for?
Cracking German Enigma code / Father of theoretical Computer Science
What compound makes up 70% of the human body?
Water
Which scientist is known for solving what is called "the ultraviolet catastrophe"?
Max Planck
What is the approximate circumference of the Earth?
~40 000 km
What are the main products of combustion?
Carbon dioxide & water
What type of magnets are used for MagLev (magnetic levitation) trains?
Superconducting magnets
(electromagnets also acceptable)
What would an olfactory organ be responsible for?
Smell
What force is responsible for keeping atomic nuclei together?
Strong force
What is the coldest planet in the solar system?
Uranus
Why don't you fall through the ground if atoms are mostly empty space?
Pauli exclusion principle
(electromagnetic forces also acceptable)
What were the first TV screens?
CRT displays
What makes bananas radioactive?
Potassium
How far does light travel in one year?
One light year