Review:

RADIANT ENERGYNUCLEAR ENERGYSOUND ENEGY

Review:

What is energy?What are the two kinds of energy?

What is kinetic energy?What is potential energy?What are the forms of energy that we have discussed?

How important is sun into our lives?Give as many importance as you can think of.

Activity 1:Go out of the classroom and stay under the sun for 10 minutes.Touch the top of your head, how does it feel?Now touch of your skin? Which is hotter or warmer? Your head or your skin? Why?

Energy can also be carried or transferred through space in the form of RADIANT ENERGY.This energy from the sun is used to dry clothes.Sun is the chief source of radiant energy..Solar energy kills microorganisms, too.The sunlight can give your skin a good tan.The Suns energy is also need to dry fish and some vegetables.

NUCLEAR ENERGY

Nuclear energy can be used to produce electricity. This energy can be obtained in two ways:nuclear fusionandnuclear fission..

HOW CAN YOU ILLUSTRATE NUCLEAR FUSION?Innuclear fusion, energy is released whenatomsare combined or fused together to form a largeratom. So is how the sun produces energy.

Innuclear fission, atoms are split into smalleratoms, releasing energy. Actually, nuclear power plants can only usenuclear fissionto produce electricityHow can you illustrate nuclear fission?

Sound EnergySound Energy is produced by vibrating objectsSound is produced when something vibrates. Guitars and pianos produce sound when their strings vibrate. Drums make sound when their drumheads vibrate. And the sound of your favorite singer is produced when his or her vocal cords vibrate.

Sound doesn't just travel though air; it can travel through solids, liquids, and other gases too. When you tap the desk you cause the molecules in the desk to vibrate and the vibrations travel through the desk like they do through the air.

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The molecules in solids are arranged differently than the molecules in gases and most of the time it's easier for sound waves to travel through solids. This means that the waves have more energy when they reach your ears and more energy means a louder noise.

CONCEPT FORMATION

Answer and take note.What is nuclear energy?How is nuclear fission differs from nuclear fusion?What is radiant energy?What is its chief source?How does it help on human being?What is sound energy?How important is it for us?

APPLICATION

ACTIVITY 2Put rice on a drum, when you strike the drum the rice will dance .WHY THE RICE DANCE?

ACTIVITY 3Put two fingers on your throat and then talk, What did you feel?

You will feel the vibrations from your voice boxBecause of the vibrations

EVALUATIONWrite True or False._____1. Nuclear Fission is combining light nuclei to form a heavier nucleus._____2. Sound Energy can be used for more convenient communication._____3. Nuclear Fusion is the splitting apart of a nucleus_____4. Solar Energy is the same as energy from the moon._____5Sound Energy is produced by vibrating objects.

ASSIGNMENT:

What is Electrical Energy? And its Uses