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Y9 Carousel Homework 2

Total questions: 10

Worksheet time: 10mins

Name
Class
Date
1.

What is an algorithm?

a)

Patterns and trends used to solve a problem

b)

A list of step-by-step instructions to solve a problem

c)

A programming language

2.

What does an algorithm need to be? (PICK 3)

a)

Clear instructions

b)

Exact

c)

Easy to understand

d)

Complex

e)

Written in code

3.

If it is AFTER 7am, what do you need to do?

a)

Take the bus

b)

Take the subway

c)

Check the time

d)

Leave home

4.

Computers represent everything in binary.

What are the only two numbers used in binary?

a)
0 and 1
b)
1 and 2
c)
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
d)
1, 2, 4, 8, 16
5.

What is 12 in binary?

[8 4 2 1]

a)
12
b)
11
c)
1100
d)
1011
6.

1111 is the binary representation of?

[8 4 2 1]

a)
4
b)
7
c)
15
d)
20
7.

The first step in problem solving is likely...?

a)

Research on alternative solutions

b)

Identify and define the problem

c)

Try out the best solution

8.

Tiny squares called ___________ are the building blocks of all digital images.

a)
elements
b)

dots

c)
pixars
d)
pixels
9.

With 1 bit, there are 2 combinations (0 and 1).

How many combinations are there 2 bits?

a)
8
b)
4
c)
16
d)
32
10.

All bitmap images are made up of...?

a)

Pixels

b)

Colours

c)

Sounds

d)

Samples