Listen to the story. Use the table to answer the questions.
A Subway Worker's Check
A busy city subway station has a help desk. A worker named Inez checks a paper map and a small battery sign. She tests one object at a time inside a covered viewing space. The cover blocks light from the station. Inez stays at the same viewing spot. She changes which light is on and records whether she can see the object. The paper map does not make light. She does not test the map and sign together.
Inez's Results Test | Object | Desk lamp | Sign switch | Object seen? 1 | Paper map | OFF | Not used | No 2 | Paper map | ON | Not used | Yes 3 | Battery sign | OFF | OFF | No 4 | Battery sign | OFF | ON | Yes
1.
What changed between Tests 1 and 2?
2.
What do Tests 1 and 2 show about the map?
3.
Why could Inez see the sign in Test 4?
4.
The objects were visible in Tests 2 and 4. How were these tests different?
5.
Circle the TWO notes that agree with the table.
Use the Light Clues
Use what the tests show to think about new checks.
Inez has a paper train ticket, too. Like the paper map, the ticket does not make light. She uses the same covered viewing space for her next checks.
6.
Which plan would help Inez see the paper ticket?
7.
Predict whether Inez can see each object. The cover blocks station light. No other lights are on.
8.
Dev says, “The map is still there in Test 1, so Inez should see it.” What is missing from Dev's idea?
9.
Inez wants to check if the ticket acts like the map. Which two checks should she compare?
10.
Tell two ways an object can be seen. Use the map and the sign tests as evidence.
