I am eight letters long - "12345678" 
My 1234 is an atmospheric condition. 
My 34567 supports a plant. 
My 4567 is to appropriate. 
My 45 is a friendly thank-you. 
My 678 is a name. 

Q: What word am I? 

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An electric train is traveling southwest at 95 miles per hour, and the wind is blowing north east at 95 miles per hour.

Q: In which direction does the smoke blow?

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With thieves I consort,
With the vilest, in short,
I'm quite at my ease in depravity;
Yet all divines use me,
And savants can't lose me,
For I am the center of gravity.

Q: Who or what am I??? 

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George makes the following proposition to Mike:

"I'll let you flip a coin 20 times. Each time the coin lands on heads, I will give you $2.00. However, each time the coin lands on tails, you must give me $3.00."

Mike flips the coin 20 times and the end result is that no money is to change hands.

How many times did the coin land on heads?

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