Heat supplies the energy that causes motion. The deeper you go into toward the Earths core, the hotter it gets. At the core it is really hot. All that heat tries to rise toward the surface. In the Mantle, the rock is partially melted and is able to move. As it is heated, the material in the mantle moves toward the surface. As the mantle material rises, it cools. When it reaches the Earths crust, it is mostly stopped. A little of the material can break through the surface, but not all. Instead, it begins to move horizontally. The mantle material moves horizontally away from a mid-ocean ridge crest. Toward the surface, the mantle material starts to cool. As it cools it sinks back down into the mantle. These areas are where deep sea trench occur. The material sinks back down to the core. The system operates like a giant conveyor belt. The motion due to heating and cooling is called convection.
What question would one ask from this paragraph?

QUESTION: What can the motion of convection be compared to?

To say her face fell would do a disservice to Tasha and to literature. (Allow me my self-indulgences as you would those of a dying man -- when I convince my mindsmith to permit the wipe, there will be another Bernardo Flynn, one who knows no more of Tasha Cortez or Vega IV than he reads here.) Her brows drew together, creasing the lovely, caramel-colored skin around her eyes and showing the pattern for an old woman's wrinkles on her forehead. Her lower lip (a trifle too narrow for her face, perhaps her only physical flaw) thrust forward slightly as she started to speak. She caught herself, slid her jaw infinitesimally back into place, and said, "You don't like it?" I laughed. What could I do? I clapped her shoulder to show I was not laughing at her. "Like it? I hate it, despise it, abhor it! It's gaudy, graceless, pretentious -- That house is an affront to taste and intelligence. I should buy it to raze it, but I am not so kind-hearted. I might, however, rent it." I think she only heard the last words of my speech. "You will?" "It amuses me. Show me around, and then I shall decide." "Of course, Senor Flynn." "And stop calling me 'senor'. Not even Los Mundos is so polite. Call me Bernardo."
What question would one ask from this paragraph?

QUESTION: What is Bernardo's last name?

If you build a campfire, you start with a large stack of sticks and logs. As the fire burns, the stack slowly shrinks. By the end of the evening, all that is left is a small pile of ashes. What happened to the matter that you started with? Was it destroyed by the flames? It may seem that way. What do you think happened? The truth is that the same amount of matter still exists. The wood changed not only to ashes, but also to carbon dioxide, water vapor, and other gases. The gases floated off into the air, leaving behind just the ashes. Although matter was changed, it was not created or destroyed. Because the same amount of matter still exists, we can say that matter is conserved. You may wonder how it can be conserved if something is now missing? Assume you had measured the mass of the wood before you burned it. Assume you had also trapped the gases released by the burning wood and measured their mass and the mass of the ashes. What would you find? The ashes and gases combined have the same mass as the wood you started with. This example illustrates the law of conservation of mass.
What question would one ask from this paragraph?

QUESTION: After you burn wood in your campfire, the wood matter ends up on the ground (mostly as ashes), but where does the rest of the matter go?

When American 11 struck the World Trade Center at 8:46, no one in the White House or traveling with the President knew that it had been hijacked. While that information circulated within the FAA, we found no evidence that the hijacking was reported to any other agency in Washington before 8:46. Most federal agencies learned about the crash in New York from CNN. Within the FAA, the administrator, Jane Garvey, and her acting deputy, Monte Belger, had not been told of a confirmed hijacking before they learned from television that a plane had crashed. Others in the agency were aware of it, as we explained earlier in this chapter. Inside the National Military Command Center, the deputy director of operations and his assistant began notifying senior Pentagon officials of the incident. At about 9:00, the senior NMCC operations officer reached out to the FAA operations center for information. Although the NMCC was advised of the hijacking of American 11, the scrambling of jets was not discussed. In Sarasota, Florida, the presidential motorcade was arriving at the Emma E. Booker Elementary School, where President Bush was to read to a class and talk about education. White House Chief of Staff Andrew Card told us he was standing with the President outside the classroom when Senior Advisor to the President Karl Rove first informed them that a small, twin-engine plane had crashed into the World Trade Center. The President's reaction was that the incident must have been caused by pilot error. At 8:55, before entering the classroom, the President spoke to National Security Advisor Condoleezza Rice, who was at the White House. She recalled first telling the President it was a twin-engine aircraft-and then a commercial aircraft-that had struck the World Trade Center, adding "that's all we know right now, Mr. President." At the White House, Vice President Dick Cheney had just sat down for a meeting when his assistant told him to turn on his television because a plane had struck the NorthTower of the World Trade Center. The Vice President was wondering "How the hell could a plane hit the World Trade Center" when he saw the second aircraft strike the South Tower. Elsewhere in the White House, a series of 9:00 meetings was about to begin. In the absence of information that the crash was anything other than an accident, the White House staff monitored the news as they went ahead with their regular schedules.
What question would one ask from this paragraph?

QUESTION:
What was the White House response to the initial reports of the crash?