Harnessing Human Energy: Chapter 2

Harnessing Human Energy: Chapter 2 - Rescue Team's Energy Needs

• Lesson 2.1: How Objects Get Energy
  • Living and nonliving things can have energy
  • Energy can move from one object to another.
  • The process of energy moving from a living object to another living object is called energy transformation.
  • Energy can be transferred from a living object to a nonliving object, like a human pedaling a bike.

Lesson 2.2: Evaluating Energy Sources

• Different energy sources have advantages and disadvantages.
  • Fossil fuels are abundant but cause pollution.
  • Solar panels rely on sunlight which is inconsistent but sustainable.
  • Wind turbines can be noisy but renewable.
• There are several ways to store energy, including batteries and fuel cells.
  • Batteries store energy chemically.
  • Fuel cells use chemical reactions to create electricity.

Lesson 2.3: Writing Scientific Arguments

• Nothing can work without energy.
• Human movement can be used to charge batteries through devices like a kinetic energy charger.
• Scientific arguments use evidence and reasoning to support claims.
• It is important to include data and evidence in arguments.
• An argument's conclusion should be supported by reasons and evidence.