28 Apr 2022

Samacheer Kalvi 7th Science Term 1 Unit 7 Answers

Samacheer Kalvi 7th Science Term 1 Unit 7 Book Back Question and Answers:

Samacheer Kalvi 7th Standard Science Book Back 1 Mark and 2 Mark Question & Answers uploaded online and available PDF for free download. Class 7th New Syllabus Science Term 1 book back question & answer solutions guide available below for English Medium. Class Seventh Std Science English Medium Term 1 Unit 7 Visual Communication book back answers given below. Students looking for class 7th Term I Unit 7 Questions and Answers can check below.

We also provide class 7th other units Book Back One and Two Mark Solutions Guide on our site. Students looking for a new syllabus 7th standard Science Term 1 Unit 7 Visual Communication Book Back Questions with Answer PDF:

For all three-term of 7th standard Science Book Back Answers English Medium – Samacheer kalvi 7th Science Book Back Answers

Samacheer Kalvi 7th Science Book Back Term 1 Unit 7 Solution Guide PDF:

Science Subject 1 Mark and 2 Mark Solutions Guide PDF available below. Click the Download option to download the book back 1 Mark & 2 Mark questions and answers. Take the printout and use it for exam purposes.

Science – Term 1

Unit 7 Visual Communication

I. Choose the appropriate answer:

1. What is the example of a Wimation?
(a) sound communication
(b) visual communication
(c) vector communication
(d) raster communication
(b) visual communication

2. Who uses Photoshop software more?
(a) Teacher
(b) Doctor
(c) Painter
(d) Photographer
(d) Photographer

3. Which option is used in the Microsoft Photostory to upload the photos?
(a) Begin a Story
(b) Import Pictures
(c) Settings
(d) View your Story
(b) Import Pictures

4. Which technology shows the computer-drawn pictures as real picture.
(a) Inkscape
(b) Photo Story
(c) Virtual Reality
(d) Adobe Illustrator
(c) Virtual Reality

5. Which technology uses pixels to create pictures
(a) Vector
(b) Raster
(c) both
(d) None
(b) Raster

6. Which software is used to create symbols
(a) Photoshop
(b) Illustrator
(c) Vector Graphics
(d) Photostory
(c) Vector Graphics

II. Match the following:

1. Animations (a) 3D
2. Raster (b) Visual Communication
3. Vector (c) Pixels
4. Virtual Reality (d) Microsoft Photostory
5. Video Story (e) Illustrator


1 – b; 2 – c; 3 – e; 4 – a; 5 – d

III. Answer the following Questions.

1. What is Raster Graphics?

  1. Raster Graphics are created on the basis of PIXELS.
  2. The photos taken by camera and the photos scanned by a scanner are of the Raster type.
  3. When we enlarge this type of photos we could see the pictures as rectangular layers or grids.

2. Write notes on 2D and 3D pictures.
The two dimensional 2D images have only the two dimensions – length and height. But three dimensional images (3D) have length, height and width. 3D images appear in front of our eyes like it happens in the real world.

3. Differentiate between Raster and Vector

S. No Raster graphics Vector graphics
1. Raster graphics are created on the basis of Pixels Vector graphics are created on the basis of Mathematics
2. Raster File types are .png, .jpg, .gif, .tiff, .psd Vector file types are .eps, .ai, .pdf, .svg, .sketch
3. Software used to edit Raster Graphics is Adobe Photoshop Software used for Vector Graphic Images – Adobe Illustrator, Sketch

4. With the help of Microsoft Photostory how will you create a video on a photostory?
Microsoft Photostory can be used to make videos using photos. First we have to upload
the photos and then select music for the video.
Step 1: Open the application of ‘Microsoft Photostory’. In that select ‘Begin A New Story’ and click on Next.
Step 2: Click ‘Import Picture’ in the next screen. Now, the files in our computer will appear. Select Saved pictures for video.
Step 3: Now we can input small text which is apt to the pictures. Then click on ‘Next’ and give animation to the videos. We can give audio effect also to these images. After finishing this click on ‘Next”.
Step 4: To provide background music, we can select a music file through “Select Music” and click on “Next”.
Step 5: Next select a title for the story and select the place where it has to be saved in your computer. Then, through SETTINGS, change the format of the video.
Step 6: Now our video is ready to view. Click ‘VIEW YOUR STORY’. You can see your video now.

Other Important Links for the 7th Science Book Back Solution Guide:

Tamil Nadu Class 7th Standard Book Back Guide PDF, Click the link – 7th Book Back Questions & Answers PDF

For all three-term of 7th standard Science Book Back Answers English Medium – Samacheer kalvi 7th Science Book Back Answers

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