Class 8 Physics CBSE

Physics Concept Maps Class VIII • Force • Pressure • Friction • Sound • Electricity • Rain, Thunder and Lightning

• Earthquakes • Light • Universe

CLASS-VIII (CANCEPT MAP)

CLASS-VIII (CANCEPT MAP)

CLASS-VIII (CANCEPT MAP)

CLASS-VIII (CANCEPT MAP)

CLASS-VIII (CANCEPT MAP)

ELECTRICITY Static electricity:The study of effects of electric charges under rest

Positive Types

Induction Conduction

Methods of heat transfer

Unit

Friction 16

1C=625×10 electrons

Negative Coulomb

Scalar Charge Quantized

Conductors Insulators Semi-conductors

Current electricity:The study of electric charges in motion and their effects

Formula

charge current= time

Unit

Ampere

Current Symbol 'I' Closed circuit Electric circuit Open circuit

Chemical effect: Electroplating:The method of plating one metal object with another metal by means of electricity coating of Ag on spoon

battery

spring

Magnetic effect:When an electric current passes through wire,it produces magnetic field around it. electromagnet,electrical bell

soft iron armature

electromagnet

hammer

CLASS-VIII (CANCEPT MAP)

CLASS-VIII (CANCEPT MAP)

CLASS-VIII (CANCEPT MAP)

N

Gla of nce inc ide angle nc e Mirror

i

r

C

Ang le o G f re l flec a of n tio n r e ce fle a c t ng R e io le fle n cte dr ay

e enc cid f in

ay tr en

le o Ang

id Inc

Normal

A

Reflecting surface

M

Terms associate

M'

B

a block on table mirror

eye mirror

periscope

muscles aqueous humour lens iris pupil cornea

sclera choroid retina

myopic eye

corrected eye

opticnerve

vitreous humour

ciliary muscels muscles

CLASS-VIII (CANCEPT MAP)