Resource

How Many Lightbulbs?

Description:
A TED-Ed video lesson about how many lightbulbs each person uses in the United Kingdom. A physicist walks us through the amount of energy used and needed all converted to the amount of light bulbs on all the time.

Related Topics:
1. Energy is a physical quantity that follows precise natural laws.
2. Physical processes on Earth are the result of energy flow through the Earth system.
3. Biological processes depend on energy flow through the Earth system.
5. Energy decisions are influenced by economic, political, environmental, and social factors.
6. The amount of energy used by human society depends on many factors.
7. The quality of life of individuals and societies is affected by energy choices.
4. Various sources of energy are used to power human activities.

Associated Grade Levels:
5-67-89-1011-12Public

Related Sub-Topics

3.6 Humans are part of Earth’s ecosystems and influence energy flow through these systems.

6.8 Amount of energy used can be calculated and monitored.

4.5 Humans generate electricity in multiple ways.

2.5 Movement of matter between reservoirs is driven by Earth’s sources of energy.

1.7 Many different units are used to quantify energy.

1.1 Energy is a quantity that is transferred from system to system.

7.6 Some populations are more vulnerable to impacts of energy choices than others.

5.1 Decisions concerning the use of energy resources are made at many levels.

2.2 Sunlight, gravitational potential, decay of radioactive isotopes, and rotation of the Earth

5.4 Energy decisions are influenced by economic factors.

1.4 Energy available to do useful work decreases as it is transferred from system to system.

6.5 Social and technological innovation affects the amount of energy used by human society.

7.3 Environmental quality is impacted by energy choices.

5.7 Energy decisions are influenced by social factors.

1.5 Energy comes in different forms and can be divided into categories.

6.6 Behavior and design affect the amount of energy used by human society.

7.4 Increasing demand for and limited supplies of fossil fuels affects quality of life.

4.1 Humans transfer and transform energy from the environment into forms useful for human endeavors

7.1 Economic security is impacted by energy choices.

3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part

4.6 Humans intentionally store energy for later use in a number of different ways.

1.8 Power is a measure of energy transfer rate.

6.3 Human demand for energy is increasing.

4.2 Humans use of energy is subject to limits and constraints.

5.5 Energy decisions are influenced by political factors.

2.3 Earth’s weather and climate are mostly driven by energy from the Sun.

6.4 Earth has limited energy resources.

1.3 Energy is neither created nor destroyed.

5.2 Energy infrastructure has inertia.

6.1 Conservation of energy has two very different meanings.

6.7 Products and services carry with them embedded energy.

7.2 National security is impacted by energy choices.

2.7 The effects of changes in Earth’s energy system are often not immediately apparent.

4.7 Different sources of energy and different ways energy is transformed, transported, and stored.

5.3 Energy decisions can be made using a systems-based approach.

6.2 One way to manage energy resources is through conservation.

4.4 Humans transport energy from place to place.

5.6 Energy decisions are influenced by environmental factors.

1.6 Chemical and nuclear reactions involve transfer and transformation of energy.

7.5 Access to energy resources affects quality of life.