Density is also an important physical property of matter. The concept of density combines what we know about an objects mass and volume. Density reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter is more dense. Differences in density of matter explain many phenomena. It explains why helium balloons rise. It explains why currents such as the Gulf Stream flow through the oceans. It explains why some things float in or sink. You can see this in action by pouring vegetable oil into water. You can see a colorful demonstration in this video.

Question: "What can density explain?"

OPTIONS:
- no
- yes

Answer: "Why things work"

Response: no

With a budget of $329 million, LSC provides civil legal assistance to low-income people in every county in America, Kleiman said. NLAP was created in 1968. A decade later, the agency used a $50,000 LSC grant to buy a building at 438 King St. in Charleston and $33,000 to buy a building at 201 King St. in Georgetown, according to Erlenborn's letter to Kaynard. In 1980, NLAP used $63,000 in LSC funds to buy property at 607 Main St. in Conway, the letter said. On Nov. 14, 2001, NLAP transferred title of the King Street building in Charleston to the Charleston County Bar Association, according to county property records. The local bar paid $5 for the building, which sits between a redeveloped office building and an antique shop. The local bar said it would maintain the building for "legal services to indigent residents of Charleston County and coastal South Carolina," the records said. The King Street building appears to be vacant. Notices at the entrance direct visitors to the equal justice center on West Montague Avenue in North Charleston. E. Douglas Pratt-Thomas, president of the local bar, was not available for comment. Charleston County has not appraised the King Street property because it is tax-exempt. But Randall Goldman, managing partner of Patrick Properties, which owns buildings from 440 to 456 King St., said he estimates 438 King St. would sell for between $700,000 and $900,000. "That building, which was purchased solely with federal legal aid dollars, should be used to provide legal services for poor people in South Carolina," Kleiman said. LSC wants the title to go to the equal justice center in Charleston or "we want 100 percent of the proceeds from the sale of the building to stay in Charleston. We are not contemplating taking that money out of South Carolina," he said. Kleiman said if the neighborhood legal program in Charleston "had honored their obligation, this would not be an issue."

Question: "What year did the NLAP buy a building in Charleston and Georgetown?"

Response: "1978"
OPTIONS:
- no
- yes

A: yes

Problem: Here the omnibus came up, and I rode back to Manchester. The whole conversation took up very little more time than it will take to read it; but I thought it worth recording, as characteristic of the people now suffering in Lancashire from no fault of their own. I know the people well. The greatest number of them would starve themselves to that degree that they would not be of much more physical use in this world, before they would condescend to beg. But starving to death is hard work. What will winter bring to them when severe weather begins to tell upon constitutions lowered in tone by a starvation diet--a diet so different to what they have been used to when in work? What will the 1s. 6d. a-head weekly do for them in that hard time? If something more than this is not done for them, when more food, clothing, and fire are necessary to everybody, calamities may arise which will cost England a hundred times more than a sufficient relief--a relief worthy of those who are suffering, and of the nation they belong to--would have cost. In the meantime the cold wings of winter already begin to overshadow the land; and every day lost involves the lives, or the future usefulness, of thousands of our best population.

Question: "What was discovered about the nature of the Lancashire people from the conversations on the bus ride back to Manchester?"

Answer: "That this people would starve and succumb to the winter severity before condescending to beg"

OPTIONS:
- no
- yes
Answer: yes

Question:
After his cousin Joe dies , Layne Vassimer and his girlfriend Macy , along with their friends Stephen , Maurice , Iris and Katrina , decide to clean up Joe's house with the intention of selling it . When they see it for the first time , they discover the house completely covered in plates of iron armor . The group also finds crop circles in the nearby cornfield . When Iris , one of their friends , suddenly disappears they realize something is really wrong . During a blackout , the house is attacked by aliens , who had previously killed Joe and abducted Iris . The group figures out the aliens are allergic to iron , Joe had covered the house in it to keep them out . They attempt to fight the aliens off , but the house is eventually blown up with Layne , Macy , and Katrina the only survivors . In the end , they drive off , listening to the radio . They hear a news report stating that the blackout they experienced affects five western states and parts of Canada . They also hear that people everywhere are being attacked by '' strange creatures . '' After reading the above, is "People are being attacked by '' strange creatures . ''" the correct answer to the question "What is the another news they heard form the radio?"? OPTIONS:
- no
- yes

Answer:
yes

You may wonder if there are other examples of static discharge. The answer is yes. Lightning is a form of static discharge. It is much more dramatic than what happens between you and the door knocker, but it is the same principle. You can see how it occurs in the following diagram and animation. You have no doubt seen lightning in a rainstorm. What does lighting have to do with static electricity? As it turns out, everything! During a rainstorm, clouds develop regions of different charges. This happens due to the movement of air molecules, water drops, and ice particles. The negative charges are concentrated at the base of the clouds. The positive charges are concentrated at the top. The negative charges repel electrons on the ground below. The ground then becomes positively charged. Over time the differences increase. Eventually the electrons are discharged. This is what we see as lightning. You can watch an awesome slow-motion lightning strike below.

Question: "What are we seeing when we see lightning?"

OPTIONS:
- no
- yes

Answer: "Protons getting discharged from sky"

Response:
no