| Name: ______________________________ | Date: ______________ |
Instructions
- Study how the preposition “on” shows position, time, or a connection.
- Read each sentence carefully and choose the answer that makes sense.
- Use complete sentences when a response asks you to explain.
Example: Complete the sentence: The map is [blank] the wall.
Answer: on
Part 1: Space Station Signals
Write on in each sentence where it correctly completes the meaning.
1. The astronaut placed a toolkit __________ the platform.
2. A bright warning symbol appeared __________ the control screen.
3. The robot rolled __________ the metal ramp.
4. A name tag was printed __________ the astronaut’s uniform.
Part 2: Mission Timing
Choose the sentence that uses on correctly to show a day or date.
5. Which sentence is correct?
| ○ A. The launch is on Tuesday. | ○ B. The launch is on noon. |
| ○ C. The launch is on 2028. | ○ D. The launch is on winter. |
6. Which sentence is correct?
| ○ A. The crew arrived on July 14. | ○ B. The crew arrived on midnight. |
| ○ C. The crew arrived on the evening. | ○ D. The crew arrived on 6:30. |
7. Which sentence is correct?
| ○ A. The experiment begins on Friday morning. | ○ B. The experiment begins on midnight. |
| ○ C. The experiment begins on 2040. | ○ D. The experiment begins on an hour. |
8. Which sentence is correct?
| ○ A. The space museum closes on Sundays. | ○ B. The space museum closes on 3:00 p.m. |
| ○ C. The space museum closes on night. | ○ D. The space museum closes on March. |
Part 3: Orbit Check
Write True if the statement uses on correctly, or False if it does not.
9. The satellite is on the outer edge of the orbit. True / False
10. The countdown ends on 4:00 p.m. True / False
11. The crew will train on Saturday. True / False
12. The probe launched on January 3. True / False
13. The lights turn off on midnight. True / False
Part 4: Space Vocabulary Links
Match each sentence beginning with the phrase that completes it best.
| 14. | The helmet rests | __________ | A. on the radio. |
| 15. | The crew leaves | __________ | B. on March 18. |
| 16. | The signal arrived | __________ | C. on Monday. |
| 17. | The mission began | __________ | D. on the shelf. |
Part 5: Captain’s Log (optional challenge)
Answer each question in a complete sentence using on correctly.
18. Where might you place a model rocket? |
19. Name a day when a space club could meet. |
20. Write a sentence using on to describe something displayed on a screen. |
21. Explain whether on or at belongs in this sentence: “The launch begins ___ noon.” |
Answer Key
| 1. | on |
| 2. | on |
| 3. | on |
| 4. | on |
| 5. | A (The launch is on Tuesday.) |
| 6. | A (The crew arrived on July 14.) |
| 7. | A (The experiment begins on Friday morning.) |
| 8. | A (The space museum closes on Sundays.) |
| 9. | True |
| 10. | False |
| 11. | True |
| 12. | True |
| 13. | False |
| 14. | D (on the shelf.) |
| 15. | C (on Monday.) |
| 16. | A (on the radio.) |
| 17. | B (on March 18.) |
| 18. | I might place a model rocket on a desk. |
| 19. | A space club could meet on Wednesday. |
| 20. | The flight path is displayed on the screen. |
| 21. | At belongs in the sentence because we use at with a specific clock time such as noon. |