NUTE: Bo the practice worksheet in science test note book
along with questions.
A)Short question answers:(one or two lines answer only)
1) What happen when metal reacts with oxygen(Ch 4 metal and non
metal)
2) What do you mean by displacement reactions?
3) What do you mean by lateral inversion Ch-16 Light)
4) Write two laws of reflection(ch-16 light)
5) Define phases of moon.(Ch-17 star and solar system)
6) What is the magnetic effects of electric current? (Chemicals effect of
electric current)
7) Define electroplating?
8) What are the two main properties of a sound which helps us to
recognise sound?(CH 13 sound)
9) What is the length of vocalcord in men and women?CH-13 Sound)
10) What is RED DATA book?(Ch7 Conservation of plants and animals)
Answers
Answered by
4
Answer:
answer of question 4
rules of refraction of light
1)when a ray of light goes from optically rarer medium to optically denser medium, it bends towards the normal.
2)when a ray of light goes from optically denser medium to optically rarer medium, it bends away from the normal.
answer of question 7
the process of depositing a thin layer of any desire metal on another materials by the passage of electric current is called electroplating.
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