Biology
Chemistry
Earth Science
Physics
Space Sciences
100
The study of very small organisms. 
What is microbiology?
100
This is how the particles behave in a gas. 
What is the forces between the particles are no longer strong enough to keep the particles close together?
100
These are the five layers of the earth. 
What are troposphere, stratosphere, mesosphere, thermosphere, and exosphere?
100
The definition of the electrostatic force. 
What is the force between particles that is caused by their electric charges?
100

This is the asteroid belt. 

What is  the region of the Solar System located roughly between the orbits of the planets Mars and Jupiter?  (It is occupied by numerous irregularly shaped bodies called asteroids or minor planets)

200
Gram positive and gram negative. 
How is bacteria classified?
200
These are types of physical properities. 

What are colour, odour, taste, size, shape, boiling point, melting point, hardness, malleability, (ability to be pounded flat), electrical conductivity, magnetism and density?

200
This is who wind is measured. 
What is strength and direction?
200
Materials that whose conductivity is somewhere between insulators and conductors. 
What are semi-conductors?
200
These four things make up the current definition of a dwarf planet. 

What is being in orbit around the Sun, having a mostly round shape due to its own gravity, having not cleared its neighbouring region of debris; and not being a satellite of a planet.

300

The conversion of sugars to acids, alcohols, or gases and is what enriches food with specific flavours, aromas, or textures.

What is fermentation?
300
This is the definition of a pure substance. 

What has a fixed composition and cannot be separated by physical means? 

300
These are the three different types of clouds.
What is cumulus, statrus, and cirrus? 
300

This is bioelectrogenesis.

What is the generation of electricity by living organisms? 

300
This was the goal of the Apollo program. 

What is to land humans on the Moon and bring them safely back to Earth?

400

This is the process of using microorganisms to clean up toxic sites, such as oil spills. 

What is bioremediation?
400
These are the two types of mechanical energy. 
What is kinetic and potential energy?
400
These are the four common greenhouse gases. 
What is water vapour, carbon dioxide, methane, nitrous oxide?
400
This is what wind turbines do. 

What is to convert kinetic (wind) energy into electrical energy using very large propeller blades?  

400
These are meteoroids. 

What are asteroids that fall out of their orbit and wander freely in the Solar System?

 

500
These three basic parts make up a virus. 
What is nucleic acid, capsid, and envelope? 
500
This is the definition of convection. 

What is  the movement of molecules within fluids (liquids and gases) caused by the transfer of heat. 

500
This is the enhanced greenhouse effect. 

What is an increase of greenhouse gases in the atmosphere causing more infrared radiation to be absorbed, and the temperature of the Earth to increase. 

500
This is the definition of base load electricity. 

What is the constant, steady stream of electricity that is always consumed, day and night.

500
This is how meteor showers are named. 

What is after the constellation that their radiant is closest to?