1.What does the Field of Asphodel look like?

Imagine the largest crowed you've ever seen, a football field packed with a million fans. Now imagine a field a million times that big packed with people, and imagine the electricity has gone out, and there is no noise, no light, no beach ball over the crowed. Something tragic has happened backstage. Whispering masses of people are just milling around for a concert that will never start.

2.What do you have to do to enter the Isles of the Blest?

You have to be a hero or something like a hero.

3.How do Grover, Percy and Annabeth end up at the pit of Tartarus?
Grover's winged shoes were dragging him to Tartarus, so of corse Percy and Annabeth had to chase him.
4.How is Hades’ aura different than Ares? How does Percy feel when he’s in Hades’ presence?
He feels he should curl up and take a nap at Hades' feet and stay forever.
5.Describe the guards at Hades’ palace.
If you can picture a soldier for every point in time, I think you have a pretty good description.
6.What sort of problems does Hades complain about?
Charon, his Helm, he used to be rich, etc. . .
7.Why was Percy’s backpack getting heavy?
Because of the Master Bolt
8.What terrible choice faces Percy when he decides to use the pearls?

He has to decide between his mom and his friends.

Would you have made the same choice he does?
I would have done the exact same thing.
9.How do Annabeth and Grover prove themselves to be real friends to Percy?
They saved his life more than once.
10.What is the power of the pearls?

To carry them in a big bubble to the sea.

answers found in The Lightning Thief, by Rick Riordan