Page 140 - Active Science 5 Ebook and Activity

F. Short Answer Questions.

1. What are transparent objects? Give five examples of such objects.
2. Why cannot we see clearly through translucent objects? Net Work

3. Explain opaque objects with examples. • To attempt an activity on
4. Define shadow. light and shadow, visit http://
5. Why transparent objects do not form shadows? www.bbc.co.uk/schools/
scienceclips/ages/7_8/light_
G. Long Answer Questions. shadows.shtml

1. Why do only translucent and opaque objects form shadows?
2. What are the properties of a shadow?

3. Explain with example how size of the shadow of an object depends on the distance between
the light source and the object.

Think Hard

Shadows of different things are given below. Identify the object and write its name
in the given space.

______________ ______________ ______________

______________ ______________ ______________

Project Work

Go outside on a sunny day and notice the difference between the shadows of various objects like
a car, a tree during morning, afternoon and in the evening. Write down your observation in your
notebook.

Life Skills Activity

In a dark room, project light from a light source on the wall and try to make different shapes on
the wall by moving your hand between wall and the light source.

Research and Development

Darken the classroom and turn on a bulb. You will see shadows of different objects in your

classroom. Now make shadows of those objects on a white paper.

140 Active Science-5