1. Study the
table. Give a suitable heading for the 3 groups
Objects
Group A
|
Group B
|
Group C
|
Dinner Plate Window Tissue Paper
Table Glass Baking sheet
2. Put the below objects into 3
different groups along with suitable headings for each group
Tracing paper Aluminium Frosted glass Ceramic Clear glass Cellophane sheet window pane Steel Wood
Magnifying glass
3. Materials that don't allow light to pass through them are called _______________
4. We can see through glass because it __________________________.
5. Tim used a bent straw to
look at the torch light. He could not see the light because _______________________.
6. Which of the following sets
consists of an opaque, a translucent and a transparent material?
1. Steel, Aluminium, glass 2. Glass, plastic,
iron
3. board, tracing paper, rice
paper 4. Tracing paper, pencil box,
glass
7.Which one of the following is not a source of
light?
1. Moon 2.Sun 3. Candle 4. firefly
8.In order for us to see an object, the object must be able to ________ light.
( Absorb/reflect/block)
9.We see the stars twinkling in the sky because they ________ light from the Sun.
10. We are able to look
inside the room through the window glass pane because _________________________________.
| ||
11. What are Shadows?
12.The position, shape and
size of a shadow can change. It depends on the positions of the _________________
and the ____________.
13. ________ surfaces reflect light better than ________
surfaces. ( Shiny/ Dull)
14. Light travels faster than ____________.
15. Tim measured the length of the shadow of a pole cast on the ground from 6.00 am to 6.00 pm and then plotted a graph as shown. Which part represents noon and how did you conclude? explain.
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