1) The sun give out ..... directly a) light b) heat c) rain 2) The one of the example of light sources is ..... a) b) c) 3) How does light travel from an object to our eyes a) The light travels in a straight line. b) The light travels in a bend line. c) The light travels in a block line. 4) Based on the picture, we know that ..... a) light travels b) light can be reflected c) light is sourcing 5) Base on the picture,do you know why the buildings appears shiny since more light reaches our eyes ? a) because they give out light b) because they have a smooth surface c) because the have rough surface 6) what is this? a) periscope b) telescope c) microscope 7) why does a submarine use periscope? a) to see a small object b) to allow seeing object that it is not looking at directly under water c) to allow seeing some object in the space 8) The example of Opaque material is .... a) b) c) 9) the window is made of ...... material a) tranlucent b) transparent c) opaque 10) we can not see clearly through this material as they allow only some light to pass through them. This material means ... a) transparent b) Opaque c) Translucent

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