Energy Conversions Worksheet
Explore different forms of energy and how energy is converted from one form to another with this Grade 9 science worksheet.
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Energy Conversions
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. Which of the following is an example of chemical energy being converted into electrical energy?
A toaster heating bread
A battery powering a flashlight
A solar panel generating electricity
A light bulb producing light and heat
2. What type of energy conversion occurs when a person eats food and then runs?
Kinetic to potential
Chemical to kinetic
Thermal to chemical
Electrical to thermal
1. The Law of Conservation of Energy states that energy cannot be created or , but it can be transferred or converted from one form to another.
2. A hydroelectric power plant converts the energy of water into electrical energy.
3. Photosynthesis is a process where plants convert light energy into energy.
1. When a car engine burns gasoline, chemical energy is converted into mechanical energy, heat, and sound.
True
False
2. An incandescent light bulb is highly efficient at converting electrical energy into light energy.
True
False
1. Describe the energy conversions that occur when a pendulum swings from its highest point to its lowest point and back again.
2. Provide an example of a device that converts electrical energy into sound energy and explain how this conversion happens.
Observe the energy pyramid below. It illustrates the flow of energy in an ecosystem. Energy is lost at each trophic level, primarily as heat.
1. Based on the energy pyramid, what percentage of energy is typically transferred from one trophic level to the next?
2. Explain why there are fewer organisms at higher trophic levels compared to lower trophic levels.