Lesson 1: What is Energy?
What is Energy?
The ability to do work and cause change.
Food is an example of:
a. energy being stored
b. energy being transformed
c. energy being transported
d. energy being transferred
a. energy being stored
Energy sources are divided into 2 main categories ___________ and ______________.
RENEWABLE energy and NON-RENEWABLE energy
True or false. Energy can be created from nothing.
Wind turbines use the kinetic energy of the wind to produce ___________.
Energy can be created from nothing. FALSE
Wind turbines use the kinetic energy of the wind to produce ELECTRICITY.
Boiling water on a stove top is an example of which form of energy?
Thermal Energy
What is the main source of energy?
The sun is the main source of energy, it gives off heat and light energy.
A battery used to turn on a flashlight is an example of:
a. energy being stored
b. energy being transformed
c. energy being transported
d. energy being transferred
b. energy being transformed.
What are energy sources?
Energy sources are the ways we get energy to do things we need.
A microwave heating food is an example of __________ energy transformed into __________ energy.
ELECTRICAL energy to THERMAL (heat) energy.
Riding a bicycle is an example of which form of energy?
mechanical energy
What are 3 forms of energy?
Mechanical Energy
Chemical Energy
Sound Energy
Light Energy
Electrical Energy
Heat/Thermal Energy
Nuclear Energy
ENERGY TRANSFORMAION
Solar panels convert ____________ into __________.
solar panels convert SUNLIGHT into ELECTRICITY.
What is the main difference between renewable and non-renewable energy?
Renewable energy can be replenished naturally and non-renewable energy will eventually run out.
Give me at least 2 examples of energy trasnformations.
examples:
Turing on a celing fan is an example of which 2 forms of energy?
Electrical and Mechanical Energy
What form of energy is being described?
___________: potential and kinetic energy together.
___________: energy that is caused by the flow of electrons.
___________: energy that is stored in atoms. For example food and batteries.
MECHANICAL ENERGY: potential and kinetic energy together.
ELECTRICAL ENERGY: energy that is caused by the flow of electrons.
CHEMICAL ENERGY: energy that is stored in atoms. For example food and batteries.
What does the law of conservation of energy state?
It states that energy cannot be created or destroyed, only transformed from one form to another.
Explain what is solar energy/ wind energy / hydropower
SOLAR ENERGY: The sun gives off light and heat energy, and we can use special panels called solar panels to capture the sun's energy and turn it into electricity. It's like using the sun's power!
WIND ENERGY: Wind turbines capture kinetic energy of the wind to turn a generator and produce electricity.
HYDROPOWER: Water can also create energy. We use dams to collect water in one place, and when the water flows through special machines called turbines, it turns into electricity. It's like using the power of flowing water!
What are 4 forms of energy?
light, sound, chemical, Mechanical, thermal (heat), Electrical, Nuclear, Chemical Energy.
Playing the guitar is an example of which 2 forms of energy?
Sound Energy and Mechanical Energy.
What are the two types of energy?
Mention them, describe what they are and give an example of each.
1. Kinetic Energy: The energy of an object in motion. Any moving object, from a running person to a speeding car, possesses this energy. Heat (thermal) and sound are also forms of kinetic energy.
2. Potential Energy: Stored energy based on an object's position, state, or structure. For example, a ball resting at the top of a hill or a stretched rubber band holds potential energy until it is released. Chemical and nuclear energies are examples of potential energy.
What are the 4 rules of energy behavior?
1. Energy can be stored.
2. Energy can be transformed.
3. Energy can be transported.
4. Energy can be transferred between objects.
What are 3 examples of renewable energy and 3 examples of non-renewable energy?
RENEWABLE: Solar energy, wind energy, hydropower, geothermal, tidal energy and biomass energy.
NONRENEWABLE: coal, oil, nueclear energy and natural gas.
What are fossil fuels?
Fossil fuels are non-renewable energy sources—primarily coal, oil, and natural gas—formed deep within the Earth over millions of years from the decayed remains of ancient plants and animals. They are burned to generate electricity, power vehicles, and heat homes.
Using a hair dryer is an example of which 3 forms of energy?
Electrical energy, thermal energy and sound energy.