Grade 10 Science (Physics)

8/16/2019 Grade 10 Science (Physics)

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GRADE 10

SCIENCEP H Y S I C S

by Glebert Dadol for BTG: Kto12 Summer 2016


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OUTLINE

1. ELECTROMAGNETIC SPECTRUM

– SOME PROPERTIES OF LIGHT/EM

RADIATION

– TYPES OF EM RADIATION (THE

SPECTRUM

2. LIGHT, MIRRORS, AND LENSES

– WAVE PROPERTIES OF LIGHT

– TYPES OF MIRRORS AND LENSES

– RAY DIAGRAMING/IMAGE

FORMATION

3. ELECTRICITY AND MA

– MOTOR

– GENERATOR


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WHAT MAKES US SEE?LIGHT

• Light is a form of energy that is released by

our lamps, bulbs, phone screens,TV monitors,

• Light is a type of electromagnetic radiation.

• Electromagnetic radiation is the energy releas

matter in the form of electromagnetic waves.• Electromagnetic waves are waves formed

the mutual induction of electric fields and m

fields.


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E L E C T R O M A G N

S P E C T R U MV I S I B L E A N D I N V I S I B L E L I G H T


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ELECTROMAGNETIC RADIATION:SOME PROPERTIES

• A HUGE SPECTRUM

• WAVE NATURE

• PARTICLE NATURE

• CAN TRAVEL IN VACUUM

• WITH A MAXIMUM SPEED OF 3X108 m/s


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WAVE NATURE AND PARTICLE NA


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ELECTROMAGNETIC SPECTRUM


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HOW DO WE SEE?LIGHT FROM AN OBJECT ENTERS OUR EYES


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LIGHT,M I R R O R S ,

A N D L E N S E SO B J E C T S I N S O M E M I R R O R S S E E M

C L O S E R T H A N T H E Y A P P E A R


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WAVE PROPERTIES OF LIGHT

• Reflection

• Refraction

• Dispersion

• Diffraction

• Interference


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REFLECTION VS REFRACTION

•

Reflection –

bouncing of light •

Refraction –

bending o

Law of Reflection Snell’s Law

1

1

2


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MIRRORS AND LENSES


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IMAGE FORMATION: POSITIVEMIRRORS


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IMAGE FORMATION: NEGATIVEMIRRORS

p q


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PROPERTIES OF IMAGE FORMED MIRRORS

Plain

Concave

Beyond Center of

Curvature

Within Center of

Curvature and

Beyond Focal

Point

Within Focal

Point

Virtual Real Real Virtual

Upright Inverted Inverted Upright

Same Size Smaller Larger Larger


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IMAGE FORMATION: POSITIVE LE

p q


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IMAGE FORMATION: NEGATIVE LE

p

q


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SEEING IMAGES


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MICROSCOPES AND TELESCOPES


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HOW DO POWER PLANTS WORBY CONVERTING ONE FORM OF ENERGY TO ANOTHER

WATER STEAMHEAT

COAL TURBINE

ELECTRICAL


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E L E C T R I C I T Y A N D

M A G N E T I S M M R . A N D M R S . E L E C T R I C A N D M A G N E T I

F I E L D


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ELECTRICITY

•

Electricity is the presence and motion of charged particles.• Static electricity is the build up of electric charges on an object.

• Electric current is the flow of charged particles around an clos

electric circuit.

• Current electricity - the continuous flow of electric charge.

• Direct current (DC) – current in which the electric charges

direction.

• Alternating current (AC) – current in which the electric cha

one direction, then in the reverse direction, over and over again.


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HOW DOES ELECTRICITY GENERAMAGNETISM?

•By electromagnetic induction

presence of an electric field gene

magnetic field


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MAKING AN ELECTROMAGNET


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HOW DOES MAGNETISM GENERAELECTRICITY?

• By electromagnetic induction – a changi

magnetic field creates an electric field and if

a close circuit, current electricity is generate

• The change can be achieved by chang

direction of the magnetic field i.e. mov

magnet or moving the coil.


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INDUCING CURRENT IN A COIL


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ELECTRIC GENERATOR


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WHAT IS A MOTOR THEN?

• Generator – mechanicalenergy (moving of the

magnet or the coil) to

electrical energy.

• Motor - the opposite of a

generator; convertselectrical energy to

mechanical energy.


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T H A N K Y O U !


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G A M E S !


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C A L L M Y n E . MG A M E 1


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C O N C A V E M AC O N V E X

VA P O R U BG A M E 2


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M A C H I N A G A M E 3


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GOOD LUCK FO

THE EX AM!S T U DY H A R D , B U T N O T T O O H A R D

Grade 10 Science (Physics)

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