1 White Letter Envelope
Be careful not to trip over anything or anyone in the dark.
Students will not believe there are holes in the index cards.
-Cut 7 to 8 holes in the index card with the hole puncher.
-Insert the index card in the envelope
-In a well light room, hold the envelope in front of you with the flashlight about 2 in. from the front of the envelope
over the index card.
-Move flashlight behind the envelope.
-Hold the flashlight about 2 inches from the back of the envelope.
1. Do stars shine during the day time?
2. Why can’t we see them?
The light from the flashlight passes through the hole in the card regardless of the position of the flashlight. Only when the surrounding area is darker than the light coming through the holes can
they be seen. This is also true for stars.
Stars shine during the daylight hours, but the sky is so bright from the sun’s light making it almost impossible
to see the stars.