Make use of the article to answer the questions.

(CNN) -- A magnitude-4.4 earthquake rattled residents of southern California early Tuesday morning, according to the U.S. Geological Survey.

There were no immediate reports of damage or injuries, authorities said. However, police and fire officials said they had received calls from residents awakened by the quake. Its epicenter was 11 miles east-southeast of the Los Angeles Civic Center, the USGS reported. It struck at 4:04 a.m.

"First it was a small one and then a big one," said Chris Curiel, who was working at the Vallejo Mini Market in Whittier, a town near the epicenter. "It felt like the floor was sinking."

He said merchandise on the shelves began shaking, but there was no damage. Because his market is a gas station, earthquakes are a bit more worrisome, he said.

Curiel said he knew immediately an earthquake was happening, and he has felt one before.

Ravi Singh, night shift supervisor at a 7-Eleven in Pico Rivera -- the town a mile east-northeast of the epicenter -- told CNN he was making coffee when the store's windows started rattling. There was no damage, he said. "Everything is fine."

iReporter says "it sounded like there were kids dancing upstairs"

Although the temblor was centered 11 miles below the Earth's surface, according to USGS, the movement was enough to awaken some southern Californians.

"It felt like two quick jolts," said CNN's Rosalina Nieves. "I felt some shaking, and I wasn't sure if it was just my upstairs neighbor ... but then you definitely felt two quick jolts." She said the movement lasted for a couple of seconds.

1. What time did the earthquake happen?
2. On what day?
3. Was it near a major city?
4. Which one?
5. How far away?
6. Where was Chris Curiel when it happened?
7. Is that in Vallejo?
8. Where is it located?
9. Did they feel one quake?
10. What did they experience?
11. Was Chris shopping at the time?
12. What were they doing?
13. Was anything in the shop destroyed?
14. Did he have a particular reason for concern?
15. Why?
1. At 4:04 a.m
2. Tuesday
3. Yes
4. Los Angeles
5. 11 miles away
6. At the Vallejo Mini Market
7. No
8. In Whittier.
9. No
10. A small one and then a big one
11. No
12. Working
13. No
14. Yes
15. Because it is a gas station