Happy Christmas!

Horizontal Words

1. Ova (3)
3. First word in the English dictionary (8)
5. A species of bird that is mainly nocturnal (3)
7. The colour of a buttercup (6)
10. Opposite of alkali (4)

Vertical Words

2. Yellow tree sap that is used in jewellery (5)
4. Type of mountain named after the God of Fire (7)
6. French for hello (7)
8. Which insect does the waggle dance? (4)
9. What did Isaac Newton discover? (7)