7.2
Transcript of 7.2
7.2 Animals, models and energy12 April 2023
Name a famous waterfall
Where is it located?
Which waterfall is the largest in the world?
What is interesting about the temperature of water at the bottom of
a waterfall?
Aims
• Develop experimental design skills as well as data interrogation. [Level 5]
• Look at examples of the energy transfers that take place in simple machines. [Level 5]
• Use the idea that energy is conserved during transfers to explain that missing energy is dissipated energy. [Level 6]
• Explain why it is advantageous for machines to be energy efficient. [Level 7]
Key words
• Efficiency
• Joule (kilojoule)
• Conserved
• Dissipated
Energy efficient
Pendulum swing
V formation
Energy transfers
Energy efficiency
Energy cannot be created or destroyed, only changed
Worked example: light bulb
Energy dissipation
And finally…
• Write down 5 examples of energy transfers using …. -> …..
• How could the transfer be made more efficient?
Homework
Read the book!