Environment Flashcards
1
Q
Example of seasonal changes
A
- change from hot weather to cold weather
2
Q
What can cause species to become extinct?
A
- a new disease
- a new predator
- a change in the physical environment
3
Q
What are the greenhouse gases?
A
Carbon dioxide
Methane
Water vapour
4
Q
What is an exothermic reaction?
A
Where energy is given out in the form of heat
5
Q
What is an endothermic reaction?
A
Where energy is taken in the form of heat
6
Q
What is incomplete combustion?
A
When there is not enough oxygen for a fuel to burn completely
7
Q
What is complete combustion?
A
When there is enough oxygen for the fuel to burn completely
8
Q
What is a catalyst?
A
A catalyst is a chemical that speeds up the chemical reaction. It is not used up by the reaction
9
Q
Example of daily changes
A
change from light and heat to dark and cold, as night falls
