Class8 Term 2

Chapter 6: – Introduction to Photoshop CC

Short Answer Type Questions:
Q1. Define the Paint Bucket Tool.
Ans. The Paint Bucket Tool in Photoshop fills adjacent pixels that are similar in color in the image. It fills with either the selected foreground color or with a pattern.
 
Q2. What do you mean by Rasterize?

Ans. Rasterizing means the text will be converted into pixels, allowing you to make image adjustments that normally do not work with text layer. Rasterize is the process of converting a vector image to a raster image.

 
Q3. What is Layers panel?

Ans. Layers panel contains all the layers present in the Photoshop document. Whenever you add an image into a Photoshop document, a new layer is created.

Q4. What do you mean by a layer? 

Ans. A Layer is a transparent sheet stacked on top of each other.
 
Long Answer Type Questions:

Q1. What is a selection tool? Write the names of any three selection tools.

Ans. Selection tools are used to select certain areas of the image to work without affecting the unselected areas. Some of the Selection tools are Rectangular Marquee Tool, Elliptical Marquee Tool and Lasso Tool.

 
Q2. Write the steps to use the Mixer Brush Tool?

Ans. Follow the below steps to use the Mixer Brush Tool:
Step 1: Open a new document and select the Mixer Brush Tool from the Tools panel.
Step 2: Select the desired brush from the Brush Presets Picker in the Options bar.
Step 3: To sample a color either you can click on the Current brush load from the Options
bar and select the desired color. Or press Alt key and click from where you wish to
sample color in the current image.
Step 4: Set various options in the Options bar according to your preferences. Specifying the
percentages of Wet, Load, Mix and Flow effects the outcome on the canvas.
Step 5: Click and drag the mouse on image to paint.
 
Q3. How will you work with the Quick Selection Tool? Is it better then Magic Wand Tool?

Ans. Quick Selection Tool makes a selection based on the color and contrast of the same color in the image that you wish to select. It remembers all the consecutive strokes. This way you can make different selections in a single image also. Quick selection tool is used to select a bigger area to work whereas the magic wand tool is used to work with a specific area. Hence Magic wand tool is better that the quick selection tool.

Chapter 7: More on Photoshop CC

Short Answer Type Questions:

a. Give any two actions which you can perform with a layer?

Ans. Copy and Paste 

b. What is the use of the Blur Tool?

Ans. Blur Tool makes the image hazy or softens the pixels of an image. It helps to highlight the main object in the image. 

Long Answer Type Questions:

a. Why Spot Healing Brush is called as texture replacement tool?

Ans. Spot Healing Brush Tool is also known as texture replacement tool because it blends the wrong or bad texture of one area in an image with the good or fine texture area of the same image. The result of the spot removal may vary depending on the complexity of the image. It can be used to remove the acne or skin blemishes and scars completely from an image.

b. What are the steps to use the Pen Tool?

Ans. Perform the below steps to draw a straight path segment: 

 Step 1: Create a new document in Photoshop or open an existing image. 

 Step 2: Select the Pen Tool to from the Tools panel and set the mode of the Pen Tool to Path from the Options bar. 

 Step 3: Click on a point to start the path. 

 Step 4: Press the Shift key and click on the next point to draw a straight path. 

 Step 5: To close the shape, return to the first point and click once when the small circle appears

 Chapter 8: More on Python

Short answer type questions:
1.What is operator precedence in python? 
Ans. Precedence is the priority to given any operator in Python. 
2.What is the use of logical operators?
Ans. Logical operators are used to assess more than one comparisons and provide True or False as the result. 
3.Write the syntax of the if...elif...else statement.
Ans. Syntax: 
 if<condition>
        Statement Set 1 
elif<condition>
        Statement set 2 
else: 
        Statement set 3 
Long answer type questions: 
1. What are the different types of conditional statements used in python?
Ans. There are three types of conditional statements: 
i. The if Statement: The if statement is the most basic conditional statement. It can evaluate only one condition. 
ii. The if...else Statement: An if…else statement provides a set of two paths, one if the condition is True and the other if the condition is False. 
iii. The if…elif…else Statement: A single if…else statement would not suffice in this case. Python allows to have multiple conditions in such cases.
2.What are the different types of arithmetic operators?
Ans. Arithmetic operators are used to perform basic mathematical operations or calculations. These are (+) addition, (–) subtraction, (*) multiplication, (/) division, etc. 
Arithmetic operators can be divided into two categories: Unary operator and Binary operator. 
3.Explain the use of if.....else statement with an example.
Ans. An if…else statement provides a set of two paths, one if the condition is True and the other if the condition is False.

Chapter 9: Loops in Python

Short answer type questions:

1. What is looping?

Ans. Looping refers to the process of repeating a set of statements repeatedly on the basis of a condition until the condition is falsified. 

2. Write the syntax to the for loop.

Ans. The syntax of for loop is for in :w Statements 

3. Write a difference between for and while loop.

Ans. While loop is used when the number of iterations are not known to the user before running the loop. For loop is used when the number of iterations are known to the user before running the loop. 

Long answer type questions:

1. Explain range() function with an example.

Ans. The range( ) function is used with for loop to generate a list of numbers. Let’s create the previous program again by using the range( ) function. for x in range (0, 9): print (x+1) 

2. Explain an example of Infinite loop.

Ans. A loop which never ends is called an infinite loop. This mostly happens when loop does not have a termination condition. 

a=13

x=1 

while x>=1: 

print (x*a) 

x=x+1

c. Draw a flowchart of the for loop.

Ans.

Chapter 10: ROBOTICS AND AI

Short answer type questions:

Q1.Who coined the term Artificial Intelligence?

Ans. John McCarthy first coined the term “Artificial Intelligence” in 1956. 

Q2.Who is a robot?

Ans. A robot designed to execute highly sophisticated instructions is referred to as an android. 

Q3.Define mechatronics.

Ans.The field of mechanics and electronics together have given rise to a new emerging sector called Mechatronics. 

Q4. How are robots used in the field to surgery?

Ans. Unmanned surgery, surgery with minimum cutting or puncturing of skin has been possible because of robots. 

Long answer type questions

Q1.What can artificial intelligence do today?

Ans.Artificial Intelligence has advanced very rapidly in the past decade because of greater use of science, engineering and mathematics in experimenting and comparing approaches. Artificial Intelligence research also overlaps with tasks such as robotics, control systems, scheduling, data mining, logistics, speech & facial recognition, etc. 

Q2. Explain the two types of robots and their uses.

Ans. There are two types of robots: (i) Industrial robots are mainly used in manufacturing industries such as automotives industries. These robots are programmed using computers. (ii) Service robots include domestic robots that clean the carpet or cut grass in the garden and move on their own. They are fully or semi-autonomous robots and controlled by electronic circuits.

 c. Robotics gained a vital place in the environmental sector. A robot developed in England can attack insects like some omnivorous plants. Also, a London aquarium exhibits a robot that has been inspired by a fish.