What are water vapour, carbon dioxide, and energy (optional)
100
A chemical substance with a pH < 7
What is an acid
100
The main source of energy on Earth
What is the sun
100
A device that slows current
What is a resistor
100
A European country which is the world's largest producer of solar energy.
What is Germany
200
The main greenhouse gas.
What is carbon dioxide
200
A chemical that determines the exact pH or pH range of a substance
What is an indicator
200
The general term for an organism that produces it's own energy via photosynthesis
What is a producer
200
An example of an input
Answers may vary
200
This probe is the first human-made object to exit the solar system and explore inter-stellar space
What is Voyager (1)?
300
The process that separates crude oil into different fuels by evaporation
What is fractional distillation
300
An ion (charged atom) that is found when an acid is dissolved in water
What is hydrogen
300
What is the word equation for photosynthesis?
water and carbon dioxide (and sunlight) gives oxygen and glucose
300
A device that can act as a switch or can augment current
What is a transistor?
300
The country closest to Antartica
What is Argentina?
400
A term used to describe a hydrocarbon with only single bonds.
What is alkane
400
A reaction that produces water and a salt
What is neutralization
400
A relationship between two species where one benefits and the other is harmed
What is parasitism?
400
Devices which compare two or more inputs and give a specific output
What are gates
400
This notorious ruler's military campaigns killed off 10% of the world's population. This resulted in a decrease of 700 million tons of carbon from the atmosphere.
Who is Ghengis Khan?
500
A carbon sink
What is a plant/photosynthesizing organism/fossil
500
The products of an acid + metal reaction
What is hydrogen gas and salt
500
A relationship between two organisms where one benefits and the other is unaffected
What is commensalism
500
Also known as an inverter
What is a NOT gate?
500
The assassination of this Austro-Hungarian prince led to the first world war.