| Name: ______________________________ | Date: ______________ |
Instructions
- Learn how the preposition "on" shows that something touches the top or surface of something else.
- Read each sentence carefully and choose or write the best answer.
- Use "on" when an object rests on a surface or when something happens on a particular day or date.
Example: Complete the sentence: The book is [blank] the desk.
Answer: on
Part 1: Space Station Supplies
Write "on" in each sentence where it belongs.
1. The astronaut placed the helmet __________ the shelf.
2. A bright sticker was __________ the control panel.
3. The robot rolled __________ the metal platform.
4. The space map rested __________ the table.
Part 2: Moon Mission Choices
Choose the sentence that uses "on" correctly.
5. Which sentence is correct?
| ○ A. The flag is on the moon base. | ○ B. The flag is on under the moon base. |
| ○ C. The flag is on into the moon base. | ○ D. The flag is on beside the moon base. |
6. Which sentence tells when the launch happens?
| ○ A. The launch is on Tuesday. | ○ B. The launch is on quickly. |
| ○ C. The launch is on beneath. | ○ D. The launch is on carefully. |
7. Which sentence uses "on" to show a surface?
| ○ A. The tools are on the workbench. | ○ B. The tools are through the workbench. |
| ○ C. The tools are after the workbench. | ○ D. The tools are during the workbench. |
8. Which sentence is correct?
| ○ A. The message appeared on the screen. | ○ B. The message appeared on between the screen. |
| ○ C. The message appeared on toward the screen. | ○ D. The message appeared on under the screen. |
Part 3: Alien Grammar Check
Write True if the sentence uses "on" correctly; write False if it does not.
9. The alien sat on the rock. True / False
10. Our science club meets on Friday. True / False
11. The rocket flew on the clouds above the planet. True / False
12. The message is written on the card. True / False
13. We arrived on the space station at midnight. True / False
Part 4: Cosmic Connections
Match each sentence beginning with the ending that completes it correctly.
| 14. | The moon chart is | __________ | A. on the rocky ground. |
| 15. | Our next mission begins | __________ | B. on Saturday. |
| 16. | The rover stopped | __________ | C. on the wall. |
| 17. | A warning flashed | __________ | D. on the monitor. |
Part 5: Captain's Log (optional challenge)
Write a complete sentence using "on" to describe each situation.
18. Write a sentence about an object resting on a surface. |
19. Write a sentence using "on" with a day of the week. |
20. Write a sentence using "on" with a screen, sign, or map. |
Answer Key
| 1. | on |
| 2. | on |
| 3. | on |
| 4. | on |
| 5. | A (The flag is on the moon base.) |
| 6. | A (The launch is on Tuesday.) |
| 7. | A (The tools are on the workbench.) |
| 8. | A (The message appeared on the screen.) |
| 9. | True |
| 10. | True |
| 11. | False |
| 12. | True |
| 13. | False |
| 14. | C (on the wall.) |
| 15. | B (on Saturday.) |
| 16. | A (on the rocky ground.) |
| 17. | D (on the monitor.) |
| 18. | Answers will vary. Example: The pencil is on the desk. |
| 19. | Answers will vary. Example: We visit the planet on Monday. |
| 20. | Answers will vary. Example: The route is on the map. |