9. What are these conditions when the snow crystals appear sharp and needle-like?
10. Are the snow crystals of the same storm similar in structure and decoration?
11. What is the difference in structure between a snowflake and a hail stone?
12. What is sleet?
13. What is the difference between hoar frost and snow?
14. Does the temperature rise or fall during a snow storm?
15. Is it colder or warmer after a snow storm has passed than it was before it began?
16. What are the conditions of weather which cause a blizzard?
17. Why does a covering of snow prevent the ground from freezing so severely as it would if bare?
18. Why is snow a bad conductor of heat?