Light Unit Test-R

1. Calculate the mean of these numbers 5, 10, 11, 18

• 5
• 6
• 18
• 11

2. Calculate the median of these numbers. 5, 10, 12, 18, 22

• 22
• 5
• 2
• 12

3. What does C E R stand for in science?

• Clean, Everyone, Room
• Claim, Evidence, Reasoning
• Claim, Energy, Resource
• Change, Energy, Recycle

4. Synonyms of evidence might be (pick all that apply)

• Everything
• Data
• Support
• Everyone

5. How does light travel? (direction, speed)

• straight lines, very fast
• curved lines, very fast
• curved lines, very slow
• straight lines, very slow

6. A phenomena is

• a bright light
• a surprise
• a significant event
• an illness

7. One reason that the teacher(right) can see the student(on the left) but student cannot see tacher

• lights on in both rooms
• light on in one room but off in the other
• lights off in both rooms
• The teacher's eyes are open, but the student's are closed

8. Another factor that could make this possible is

• there is furniture in one room but not the other
• there is a guitar in one room
• special glass
• special led lights

9. We measure light in ...

• energy.
• matter
• lux.
• plasma.

10. This is an example of what method to show how light travels

• Dash Line Methold
• Reflection
• Transmission
• Ten Line Method