Download Energy Assesment 1

International Baccalaureate (HL)
Topic 8 : Energy
Classroom Assignment 1
Definition:
Energy is the ability to do work.
And a very good definition of work is:
Work is the transfer of energy.
_______________________________________________
There are two main types of energy
Kinetic Energy : The energy of motion
Potential Energy : Stored or positional energy
Before we look at these in more depth, we need to consider the many forms of
energy that we utilise in our everyday lives.
Q1. Briefly describe the following types of energy.






Mechanical Energy
Electrical Energy
Chemical Energy
Heat Energy
Sound Energy
Light Energy
Q2. Energy cannot be destroyed, but it can be converted from one form to
another. Give 3 examples.
Q3. Whilst energy cannot be destroyed, it is often wasted. Give some
examples where energy wasted.
Q4. Briefly describe why it is impossible to create machines that are 100%
efficient (with NO energy loss).
Sources of Energy
Q5 . Sources of energy are often divided into renewable and non-renewable.
Briefly describe where mankind currently gets most of its energy and why this is
unsustainable (in the long term)
Q6. The following website provides some good information about energy.
http://www.learnaboutenergy.org/renewable_energy/RenewableEnergy3.htm
Using this website as a resource, briefly describe the following types of
renewable energy





Hydro Power
Biomass/Bio Energy
Geothermal
Wind Power
Photovoltaics