Answers

Work Sheet I

Material

Property

Steel Bridge

Absorption

Diamond ring

Elasticity

Tissue

Hard

Elastic Band

Strong

Work Sheet II

Think & Answer True or false

As a team complete the following worksheet (5min)

Material

Name of the material

True or False

Aluminium conductor

True

Mud pot & cups - Conductor

False

Copper Insulator

False

Glass materials Insulator

True

Work Sheet III

Word scramble

QUESTIONS

ANSWERS

1. REGNEY

1. ENERGY

2. TAERTM

2. MATTER

3. EEYILCTRCTI

3. ELECTRICITY

4. ARGITYV

4. GRAVITY

5. GLTIH

5. LIGHT

6. TRNUCER

6. CURRENT

7. INTECIK

7. KINETIC

8. VAWE

8. WAVE

9. YHREOT

9. THEORY

10. UENLARC

10. NUCLEAR

11. LSORA

11. SOLAR

12. MSSA

12. MASS

13. EROFC

13. FORCE

14. MINOOT

14. MOTION

15. RNICTFOI

15. FRICTION

16. MNGTEA

16. MAGNET

17. OEPWR

17. POWER

18. TIAESNRCSE

18. RESISTANCE

19. ICEEPLS

19. ECLIPSE

20. IUVERSNE

20. UNIVERSE

Work Sheet IV

Talk a minute - Physics in everyday life

As a team complete the following worksheet (5 min)

Guess the basic Principle

Guess the function

Inverse piezo electric effect

Dual nature of matter waves

Indicates particle nature & wave nature of light radiation

Scattering of Light

The wavelength of Red light is 6000 A0 (High) and hence it is used to indicate stop in traffic signal. The wavelength of yellow & green light is less when compared with Red light.

Indications:

RED STOP

YELLOW WAIT

GREEN GO AHEAD

Work Sheet v

Match the appropriate points

Sl.No

Classical Free electron theory

Quantum Free electron theory

1.

Not obey classical laws

Obeys classical laws

2.

Obeys quantum laws

Not obeys quantum laws

3.

Verifies ohms law

4.

Explained photo electric effect

Not explain electrical conductivity of semiconductor

5.

Explained Compton effect

Dual nature of matters

6.

Explained in 1928

Explained in 1900

7.

Sommerfeld

Drude and Lorentz

Work Sheet VI

Think & Answer

As a team complete the following worksheet (5 min)

Identify

ANSWER

COLOUR CODE OF RESISTOR

B

B

R

O

Y

G

B

V

G

W

WHICH ONE IS DANGEROUS WHEN IT PASSES THROUGH HUMAN BODY?

AC OR DC

DC

WHAT IS THE FREQUENCY OF DOMESTIC POWER SUPPLY ?

50 Hz

DOES THE CURRENT FLOWS THROUGH WATER?

YES

WHY DOES THE POSITIVELY CHARGED NUCLEUS AND NEGATIVELY CHARGED ELECTRON CLOUD ARE NOT ATTRACTED?

NUCLEAR FORCE PREDOMINATES OVER THE ELECTROSTATIC FORCE OF ATTRACTION.

Work Sheet VII

Part A

Part B

CONDUCTOR

SILICON

2

SEMICONDUCTOR

COPPER

1

INSULATOR

FERRO TYPE

5

SUPERCONDUCTOR

QUARTZ

7

MAGNETIC MATERIAL

WOOD

3

NANO MATERIAL

TIN

4

PIEZO ELECTRIC MATERIAL

EYE LENS

8

BIO MATERIAL

CNT

6

Work Sheet VIII

Personality Identification:

SIR ISSAC NEWTON

ALBERT EINSTEIN

GALILEO

BOHR

ABDUL KALAM

Work Sheet IX

MCQ

1.Which of the following is not a conductor?

a. Metals b. Mica c. Human body d. none of the above

2.Electric Current flows from

a. Negative to positive b. None c. Positive to negative d. both a and c

3.V = IR is ..

a. Newtons law b. Coulombs law c. Ohms law d. None

4.Which of the following is not an insulator

a. Glass b. Mica c. Human body d. Plastic

5.The energy acquired by electrons is ..

a. 1 J b. 1.6 x 10- 19 J c. 10-19J d. None

6.Electric field E =

a. F / Q b. Q / F c. F/a d. None

7.AC can be converted into DC using .

a. Resistor b. Capacitor c. Inductor d. Rectifier

8.Electrons in the outer most orbit is called as

a. Valence electrons b. Orbital electron c. Electrons d. None

9.Electric Power P =

a. I R2 b. VR c.V2R d. I2R

10.If heat flows from one place to other through substance called as

a. Radiation b. Conduction c. Convection d. None