Class 8 Chapter 4 Question Answers

Class 8 

Chapter 4  Software Applications 04

QUESTION ANSWERS

Q.1 What is Stellarium software ?

Ans.1 – Stellarium is a free open source planetarium software. It is helpful in viewing 3-D view of sky on computer screen just like telescope or binoculars.

Stellarium is a software project that allows people to use their home computer as a virtual planetarium. It calculates the positions of the sun and moon , planets and stars and draws how the sky would look to an observer depending on their location and the time.

Q.2 How to install Stellarium software ?

Ans.2 – Stellarium software can be installed by downloading  it from website – http://www.stellarium.org. After downloading run the software and install it . After installing Stellarium icon will appear on desktop.

Stellarium software can also be installed in smartphones by downloading Stellarium Mobile Sky Map from Playstore.

Q.3 How to change date ,time and location in Stellarium software?

Ans .3 – Steps to change date, time and location in Stellarium are-

 Step 1. Take cursor on toolbar of Stellarium ( left side of window)

Step 2. Click on Location Window from Toolbar or press F6 Key.

Step 3. Now select your country and type the name of city in search box and select the city.

Step 4.  Now location will change, check the arrow mark on map shown for confirmation.

Step 5. Now to change date & time , open Date & Time Window from toolbar of Stellarium or Press F5 Key.

Step 6 . Set date and time as you want to set and software will show changes view according to time

Q. 4 How to check sun-rise and sun set in Stellarium software?

Ans 4 . Steps for sun-rise and sun set in Stellarium software are-

  Step 1 – open Stellarium , you will see “S” which means South direction.

 Step 2 – Change the orientation to East by clicking Shift+E

 Step 3- Chanhe location as delhi 

Step 4 –Change date and time and set date -01 september and time – 7:30 am

Now you will see sunrise .

Step 5 – for sun set change orientation to west direction by clicking Shift +W and set time of evening.

Q. 5 Write Steps  to search Moon with help of Stellarium software?

Ans 5 – Steps to search Moon are-

Step 1 – Open the toolbar from leftside of stellarium window.

Step 2 – Click on “Find Object Window” from the toolbar

Step 3 – Search Moon in the search box. After this moon will be displayed on screen. It will also display all the information regarding moon on left side of screen.

Q.6 What is Configuration window in stellarium?

Ans 6 – Configuration window is simple settings of program like language , information or to move around in stellarium window etc. To open configuration window click on configuration tool button from toolbar or press F2 key from keyboard.

Q.7 – Name the various tools present on the main bottom toolbar of Stellarium.

Ans 7 – Main Toolbar is present at bottom of Stellarium window. Various tools are –

a) Constellation

b) constellation names

c) Constellation art

d) Equitorial grid

e) Deep sky objects

f) View options