Biology
What is the longest type of cell in the human body?
The nerve cell
What is the most common element in the Universe?
Hydrogen
Define nuclear fission
A heavy unstable nucleus splits into 2 or more smaller nuclei are releases energy
Which two gases are explosive at high temperatures?
Hydrogen and Oxygen
What does EMF stand for in physics?
Electromotive force
Heterochromia results in which change in physical appearance?
Different coloured eyes
Which chemical causes the burning taste sensation when eating chillies?
Capsaicin
What units are used to measure sound intensity?
Decibels
If you took all the carbon out of a human body, how many graphite pencils could you make?
About 9,000
Hadrons are composite particles made up of two or more of which elementary particles?
Quarks
Which nutrient group is used to help grow and repair cells?
Proteins
Name a noble gas that forms stable compounds.
Xenon, Krypton or Radon
What is the opposite of a ‘concave’ lens?
Convex
What is the name of a hydrocarbon with two carbons sp2 hybridized?
Ethene
What is a cylindrical coil of wire in which a magnetic field is created when an electric current is passed through it?
Solenoid
What is the name given to a catalyst, which occurs in nature to regulate the speed of chemical reactions in the metabolisms of living organisms.
Enzyme
What color is uranium?
Yellow
What form of radiation has the shortest wavelength?
Gamma Rays
What is the most common state of matter in the universe?
Plasma
What is measured by a hygrometer and a hygroscope?
Relative humidity
What name is given to the microscopic plants found in great numbers in rivers, lakes, and oceans?
Algae
The red compound hemoglobin is made of which element in mammals?
Iron
Two identical cars collide head on. Each car is traveling at 100 km/h. The impact force on each car is the same as hitting a solid wall at:
Since the collision is head on and each car is identical and traveling at the same speed, the force of impact experienced by each car is equal and opposite. This means that the impact is the same as hitting a solid wall at 100 km/h.
What is the most commonly used material in the manufacturing of semiconductors?
Monocrystalline Silicon
Describe the photoelectric effect.
A phenomenon in which when a beam of light is directed at a metal, the photons collide with the atoms and if a photon's frequency is sufficient to knock off an electron, the collision produces the photoelectric effect.