Hold a glass slab at one end with your hand and stand in the sunlight.

1.	Hold a glass slab at one end with your hand and stand in the sunlight. See the shadows of your hand and glass slab. Explain what you observed.
Answer» 1. I find that glass slab does not form a shadow. 2. I observed the shadow of my hand. 3. It means glass slab is a transparent object and hand is opaque object. 4. My conclusion is that only opaque objects form clear shadow. 5. And transparent objects does not form shadows.

Hold a glass slab at one end with your hand and stand in the sunlight. See the shadows of your hand and glass slab. Explain what you observed.

Answer»

1. I find that glass slab does not form a shadow.

2. I observed the shadow of my hand.

3. It means glass slab is a transparent object and hand is opaque object.

4. My conclusion is that only opaque objects form clear shadow.

5. And transparent objects does not form shadows.