CLASS 8TH DAY 6
INTRODUCTION
Origin of the Constellations
Ever since people first wandered the Earth, great significance has been given to the celestial objects seen in the sky. Throughout human history and across many different cultures, names and mythical stories have been attributed to the star patterns in the night sky, thus giving birth to what we know as constellations.
When were the first constellations recorded? Archaeological studies have identified possible astronomical markings painted on the walls in the cave system at Lascaux in southern France. Our ancestors may have recorded their view of the night sky on the walls of their cave some 17 300 years ago. It is thought that the Pleiades star cluster is represented alongside the nearby cluster of the Hyades. Was the first ever depiction of a star pattern made over seventeen millennia ago?
Learning the constellations is fun and easy. Moreover, knowledge of the night sky can provide hours of enjoyment whenever you look up on a clear night.
>>USING A STAR CHART
A star chart is a map of the night sky. With it, you can identify and locate constellations and stars. A typical star chart (see below) shows the relative positions of the stars and their brightness.
Chart of Winter Sky
To use a star chart to identify stars and constellations, you must first find the one appropriate for the time of year you are observing. Notice that the chart above is labeled “Winter.” Picking the chart appropriate for the season is important because as the Earth orbits the Sun, the Sun’s glare hides many of the stars.
Because each night the stars move across the sky, rising in the east and setting in the west, you also need to consider the time of night.
Once you have found the appropriate chart, you need to match it to the sky. First, you should match direction. That is, if you are looking south, you need to orient the chart so it shows the southern sky.
With the correct chart in hand you are now ready to match it to the night sky. Two steps are helpful here. First, look for star patterns. Second notice the relative brightness of stars in the pattern. The chart shows the relative brightness of the stars by their size. Dim stars are shown as tiny dots. Bright stars are shown by big dots.
Watch the documentary “Exploring The Southern Stars” to Explore stars in our galaxy!!👇 👇
ACTIVITY : CONSTELLATION FLASHLIGHT
What You Need
- Black paper or card stock
- Scissors
- Flashlight
- needle
- Pencil
Step 1: First off, to make sure the discs work you’ll need to remove the silver shiny part on the inside of the flashlight.
Step 2: Take the top part of the flashlight and trace the part you want the discs to fit on top of onto the black card stock.
Step 3: This might be the trickiest part! Take the scissors and carefully cut as close to the tracings as you can. The closer you are the better they will fit!
Step 4: Now comes the really fun part. Pick your favorite constellations and mark the dots onto the card stock circles. Take a needle and poke the holes through the marked dots.
Step 5: Assemble your new flashlight, throw on the discs, and have fun!
Music the healer
Everyone loves music , it’s known to be relaxing and soothing for the mind .
So today let’s learn a new song. You may also ask you maa or papa about their favourite song and listen to it. Try and learn the lyrics and perform for your family at the end of the day . Lets have some quarantine fun .
JIVAN GYAN
Today we will learn about 3 Mudra which practicing daily for 15min we can boost up OUR Memory and Concentration power. Click on learn more to watch the video explaining the same.
