Frame rate and screen resolution

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Quick Questions

Shade in the A or B circle for each question.

1. What does fps stand for?

A Files per system

B Frames per second

2. Which game will look smoother?

A A game running at 60 fps

B A game running at 30 fps

3. Which screen resolution has more pixels in every frame?

A 4K

B 1080p

4. You switch a game from 1080p to 4K. What does the GPU have to do?

A Draw more pixels in every frame

B Draw fewer pixels in every frame

5. A game stutters and feels jerky at 15 fps. What would help most?

A Show fewer pictures each second

B Get a higher frame rate

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
160 fps		AA resolution with about four times as many pixels per frame as 1080p, so the GPU has more to draw
23840 x 2160 (4K)		BThe screen shows 60 pictures every second, so game movement looks smooth
3Frame rate is the number of pictures the GPU shows each second		CThis is backwards. A higher fps looks smoother, so 60 fps looks smoother than 30 fps.
4Raising the resolution means the GPU must draw more pixels in every frame		DThis is backwards. 1080p has fewer pixels than 4K, so the GPU draws fewer pixels per frame, not more.
5A game running at 30 fps looks smoother than one at 60 fps.		Epixels = 1920 * 1080
6Changing from 4K to 1080p makes the GPU draw more pixels per frame.		Fframe_rate = 30 # fps

Definitions

fps

Fill in the Blanks

Complete each line of code by filling in the missing parts.

width = 1920 height = 1080 pixels = width _ height

frames = 120 seconds = 2 fps = frames _ seconds

fps = 30 if fps _ 60: print("Less smooth")

uhd = 3840 * 2160 hd = 1920 * 1080 print(uhd _ hd)

fps = 60 ms = 1000 / fps _____(ms)

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A fps = 60

B seconds = 2

C frames = fps + seconds

D print(frames)

Question 2

A fps == 60

B frame_ms = 1000 / fps

C print(frame_ms)

Question 3

A fps = 30

B if fps >= 60

C print("Very smooth")

D else:

E print("Less smooth")

Question 4

A width = 3840

B height = 2160

C pixels = width * height

D print(pixel)

Question 5

A fps_list = [30, 60, 120

B for fps in fps_list:

C print(fps, "fps")

Answer Key

Frame rate and screen resolution

Section A: Quick Questions

B — Frames per second

A — A game running at 60 fps

A — 4K

A — Draw more pixels in every frame

B — Get a higher frame rate

Section B: Match the Pairs

60 fps → The screen shows 60 pictures every second, so game movement looks smooth

3840 x 2160 (4K) → A resolution with about four times as many pixels per frame as 1080p, so the GPU has more to draw

Frame rate is the number of pictures the GPU shows each second → frame_rate = 30 # fps

Raising the resolution means the GPU must draw more pixels in every frame → pixels = 1920 * 1080

A game running at 30 fps looks smoother than one at 60 fps. → This is backwards. A higher fps looks smoother, so 60 fps looks smoother than 30 fps.

Changing from 4K to 1080p makes the GPU draw more pixels per frame. → This is backwards. 1080p has fewer pixels than 4K, so the GPU draws fewer pixels per frame, not more.

Section C: Definitions

fps — Frames per second: how many pictures the GPU shows each second. 60 fps looks smoother than 30. Higher resolution like 4K means more pixels per frame, so the GPU works harder.

Section D: Fill in the Blanks

width = 1920
height = 1080
pixels = width * height

frames = 120
seconds = 2
fps = frames / seconds

fps = 30
if fps < 60:
    print("Less smooth")

uhd = 3840 * 2160
hd = 1920 * 1080
print(uhd > hd)

fps = 60
ms = 1000 / fps
print(ms)

Section E: Spot the Error

C — The number of frames is frames per second multiplied by the seconds, so it should be fps * seconds (120 frames). Adding gives the wrong answer.

A — A single = stores a value in fps. == compares values, so fps would never be set and the next line would crash. It should be fps = 60.

B — An if statement must end with a colon. It should be if fps >= 60:

D — The variable is called pixels, not pixel. Using a name that was never created causes an error. It should be print(pixels).

A — The list is missing its closing square bracket. It should be fps_list = [30, 60, 120]