Question

Question No: 01 (1x10=10) Q4. Answer the following questions in one or two words: a) Write two natural sources of light. b) What do we see in a plane mirror? c) What do we call a collection of rays of light? d) Name two girdles in human skeletal system. e) Give another name for movable joints. f) Name the method used to pick up iron objects from garbage. g) How many rminals does an electric cell have? Name them. h) Name the substance used to make the filament of a bulb. i) Name the process by which clear fluid is transferred to another when heavy particles get settled down. i) What type of skeleton a cockroach has?
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Answer 1

Answer:

a) sun, stars

Explanation:

A) Sun and stars are a natural source of light

Answer 2

Answer:

a) Sun, Fireflies.

b) in a plane mirror we see the reflection of light. ( please check it once I have doubt in it)

c) Beam of light.

d) Pectoral Girdle,Pelvic Girdle.

e) Synovial joints.

f) Scraping

g) Two terminals:- Positive,Negative.

h) Tungsten

i) Exoskeleton