Thai Sikh International School
E-Learning Programme – Online
Assignment – 12/09/2013
Name
: Subject
: General Science
Year : 5 A/B Week
No. : 27
I Fill in the blanks
1.
……………………………………helps
us to see objects.
2.
Objects
that give out or emit their own light is called………..(luminous or non luminous
)objects
3.
………………………………..objects
allow the light to pass through them directly.
4.
…………………………………objects
do not allow the light to pass through it all.
5.
…………………………………objects
allow the light to pass through them partially.
6.
Light
travels in a ……………………………………….
7.
…………………………….are
formed when an opaque object comes in the path of light
8.
……………………………….
and ………………………………….objects are essential for the formation of shadows on a
screen.
9.
We
see …………………………of the object in the mirror.
II
Answer in one or two sentences
10. Give two examples of opaque
objects
………………………………………………………………………………………………………
11. Give two examples of transparent
objects.
………………………………………………………………………………………………………
12. Give two examples of translucent
objects
………………………………………………………………………………………………………
13. Give two possible sources of
light
………………………………………………………………………………………………………
III
Choose the correct answer
14. ……………………………..(mirror/glass) helps
to change the direction of light that falls on it.
15. ……………………………..(opaque/transparent)
objects cast shadows.
16. Coloured objects form
_____________________(coloured/dark) shadows.
IV
Answer the following
17. How are shadows formed?
……………………………………………………………………………………………………………………………………………………...…………………………………………………………………………………………………………………………………………………………………………………………
18. What is meant by reflection of
light?
……………………………………………………………………………………………………...............
19. Explain with the help of an
activity that light travels in a straight line?
………………………………………………………………………………………………………………………………………………………………………………………............................................................
20. Distinguish between transparent
objects and translucent objects
………………………………………………………………………………………………………………………………………………………………………………………...........................................................
V Choose the best answer
21. Name the producer in the food
chain given below
grass-----àgrasshopper-------àfrog-----àsnake------àeagle.
A grass B grasshopper C frog D snake.
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