4.3.3.1 Gases

Spec reference: 4.3.3 (subtopic).

What you need to know

• gases and only
• found in specific places.
• wind – using turbines Renewable, no pollution, no lasting damage
• to the environment, minimal running cost.
• Not as reliable, do not work when there is no
• wind, cannot increase supply if needed.
• hydroelectric – uses a dam Renewable, no pollution, can increase supply
• if needed.

Self-assessment (checklist)

• I can describe the motion of the molecules of a gas.
• I can describe how the temperature of a gas is related
• I can explain how the motion of the molecules in a gas
• I can explain how the motion of the molecules in a gas

Key steps (method)

• Identify what the question is testing and use the correct equation/definition.
• Show substitutions and units clearly.

Common mistakes

• Unit conversions, rearranging errors, or quoting a law without applying it.