Even though we do not have clock, we can know the time by observing s

1.	Even though we do not have clock, we can know the time by observing some shadows in daytime. Think and discuss with your friends how we can know the time at night?
Answer» We can know the time by position of moon and stars or with reference to pole star. Estimation of time by using position of moon: 1. If the moon is full do the experiment stop if it is new moon. 2. Imagine the moon is divided into 12 vertical strips. First hour at right edge and last hour at left edge. It can vary by season or location. 3. Read the moon from left to right following an imaginary horizontal half line. Look for where the line intersects the boarder between light and dark. Make a note of which strip that intersection is in. For example: The instruction is at 8 pm and transition from right to left is from light to dark. This tells us the moon will set in the west at 8 pm. This moon will set at about 7-8 hours after sunset. If sunset is at 8 pm. You can expect moon time is at 3-4 am.

Even though we do not have clock, we can know the time by observing some shadows in daytime. Think and discuss with your friends how we can know the time at night?

Answer»

We can know the time by position of moon and stars or with reference to pole star.

Estimation of time by using position of moon:

1. If the moon is full do the experiment stop if it is new moon.

2. Imagine the moon is divided into 12 vertical strips. First hour at right edge and last hour at left edge. It can vary by season or location.

3. Read the moon from left to right following an imaginary horizontal half line.

Look for where the line intersects the boarder between light and dark. Make a note of which strip that intersection is in.

For example:

The instruction is at 8 pm and transition from right to left is from light to dark. This tells us the moon will set in the west at 8 pm.

This moon will set at about 7-8 hours after sunset. If sunset is at 8 pm. You can expect moon time is at 3-4 am.