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Year 7TA2 AssessmentComputer Science What are the digits in a binary number system? What are the digits in the decimal number system? Collecting information to solve a problem It is the brain of computer Step by step instructions What is an algorithm? When using the binary system, data is converted using the power of 10 when using the binary system, data is converted using the power of 16 when using the binary system, data is converted using the power of 2 Why is the binary system known as base 2? Convert the following binary numbers in to denary 0101 Convert the following binary numbers in to denary 1010 Convert the following binary numbers in to denary 1000 Convert the following binary numbers in to denary 11111111 Convert the following binary numbers in to denary 10101010 Convert the following binary numbers in to denary 01100111 Convert the following denary number into binary 56 Convert the following denary number into binary 128 Convert the following denary number into binary 22 Thinking like a computer Step by step instructions Looking at a problem and working out a way a computer might be able to solve it. What is computational thinking? Write the stages of computational thinking in order Choose from the following Hypothesis testing Data collection Identify the problem Pattern identification Decompose the problem A- Z Ascending order is.. Z - A Descending order is 10 - 0 A - Z As a platform to program a solution To test a solution to a problem To plan out the solution to a problem What are algorithms used for? A diagram that represents a set of instructions What is pseudocode? A way of describing a set of instructions that doesn’t use specific syntax A diagram that represents a set of instructions Which of the following is not a computational thinking technique Abstraction Pattern recognition Decomposition Coding When is a computer most likely to be used when using computational thinking? During decomposition During pattern identification When writing algorithms At the end, when programming a computer Case Study question Which step of computational thinking links Cholera in Soho with Malaria in Kitanga Abstraction Generalisation Pattern Identification Data collection Choose from the following pattern identification, abstraction, generalisation, data collection Dr Snow collected data on a map. He used this to perform which step of computational thinking? What is bubblesort? A sorting game A machine that blows bubbles A searching algorithm A sorting algorithm 1. 3. 2. 4. Sort the following list using bubblesort in ascending order5 1 2 3 4 5 (hint write the first 4 steps and leave a space between numbers) The process of filtering out irrelevant characteristics and unecessary detail The process of filtering out unnecessary detail The process of filtering out irrelevant characteristics What is abstraction? This dog has a wet nose Dogs run quickly I like dogs This dog has a brown coat Which of the following is a general characteristic Houses have walls, doors and people live in them. How many of these characteristics do we need to know to draw a house? Two of them Three of them One of them Use bubblesort to sort this array in ascending order 1 5 4 3 2 (Hint write steps of the two passes) |