Computer Science Discoveries Unit 3 Chapter 2 Mastery Check

Abstraction

• the rate at which frames in an animation are shown, typically measured in frames per second
• A graphic character on the screen with properties that describe its location, movement, and look.
• Pulling out specific differences to make one solution work for multiple problems.
• in programming, an expression that evaluates to True or False.

Conditionals

• Any valid unit of code that resolves to a value.
• a single image within an animation
• Statements that only run under certain conditions.
• Any valid unit of code that resolves to a value.

Boolean Expression

• a single image within an animation
• A single value of either TRUE or FALSE
• A piece of code that you can easily call over and over again.
• Finding and fixing problems in your algorithm or program.

Which answer contains the code to draw this image?

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Which code will make the plane move to the right?

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What direction will the sprite in this code go?

• Up and left

• Up and right

• Down and right

• Down and left

Why is the order of the code important?

• It is important because it goes from top to bottom.

• It is important because if you don't pay close attention to where you put things, you might not see all your shapes or sprites.

• It is not important.

• It is important because following the same order every time prevents you from making mistakes.

Which of these has the y axis labeled correctly?

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Which of these has the x axis labeled correctly?

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Look at the following code. Which line should the following comment go? "Player jumps up"

• Line 5

• Line 11

• Line 14

• Line 17

• Line 19