This Grade 5 vocabulary crossword puzzle helps students reinforce their understanding of descriptive words, animals, and materials through an engaging word game format.

To solve the crossword puzzle, we need to match the clues with the appropriate words. Let's go through each clue and determine the correct answers.

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Across:

1. 4. A small animal with eight legs and a body made up of two parts.
- This describes an spider.
- Answer: SPIDER

2. 6. Feeling or showing thanks; grateful.
- The word for this feeling is grateful.
- Answer: GRATEFUL

3. 9. A kind or helpful act.
- A helpful act is called a deed or kindness, but in crosswords, "act" itself is often used.
- Answer: ACT

4. 10. Tying together of material such as rope, string, or yarn that is used to fasten.
- This is a knot.
- Answer: KNOT

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Down:

1. 1. That on which something stands or rests.
- This is a base.
- Answer: BASE

2. 2. A place where ships load and unload, and its nearby town or city.
- This is a port.
- Answer: PORT

3. 3. To be under control.
- This means to be obedient.
- Answer: OBEY

4. 5. Showing no respect for authority; refusing to obey.
- This is disobedience.
- Answer: DISOBEY

5. 7. A large very strong mammal with short fur.
- This describes an elephant.
- Answer: ELEPHANT

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Filling in the Crossword:

Now, let's fill in the crossword grid based on the answers:

```
1 2 3 4 5 6 7 8 9 10
1 S P I D E R
2 G R A T E F U L
3 A C T
4 K N O T
5 B A S E
6 P O R T
7 O B E Y
8 D I S O B E Y
9 E L E P H A N T
```

Final Answer:

The completed crossword is:
- Across:
1. SPIDER
2. GRATEFUL
3. ACT
4. KNOT

- Down:
1. BASE
2. PORT
3. OBEY
4. DISOBEY
5. ELEPHANT

Thus, the final answer is:
\boxed{SPIDER, GRATEFUL, ACT, KNOT, BASE, PORT, OBEY, DISOBEY, ELEPHANT}