Problem: Rough surfaces create more friction than smooth surfaces. Thats why cars have tires. Its also why we use rubber mats in areas that might get wet. In your bathtub, you may even use No-Slip tape. No-slip is another way of saying the items has a lot of friction. In Figure 1.9, the blades of the skates are very smooth. Thats why you cant slide across ice with shoes. The soles of your shoes are much rougher than skates. The rougher surface of shoes causes more friction and slows you down. Heavier objects also have more friction. A heavy object presses down with more force. The surfaces are held together more tightly. This makes the surfaces harder to slide past each other. Did you ever try to push something heavy across the floor? Heavy objects are much harder to push than light objects.

Question: "Why do cars have tires?"

Answer: "Rubber creates friction"

OPTIONS:
- no
- yes
Answer: yes

Question:
In actual practice, however, we act too often as if we only cared for economic values. If we are to live up to our educational profession, we must look our aim in the face and honestly practise what we believe. While training of character and conduct is the accepted aim for education in general, to make this useful and practical each teacher must fix her attention on how this ultimate aim affects her own special part of the whole work. By watching the free child she will discover how best she can help him: he knows his own business, and when unfettered by advice or command shows plainly that he is chiefly concerned with _gaining experience_. He finds himself in what is to him a new and complex world of people and things; actual experience is the foundation for a complete living, and the stronger the foundation the better the result of later building. _The first vital principle then is that the teacher of young children must provide life in miniature; that is, she must provide abundant raw material and opportunities for experience_. After reading the above, is "Because the aim of education is watching, not intervening" the correct answer to the question "How does watching the child help the educator find their special part of the whole work?"? OPTIONS:
- no
- yes

Answer:
no

Input: How can you describe your location? You might use a familiar system. You might say, 'I live at 1234 Main Street, Springfield, Ohio.' You could also say, 'I live right behind the Elementary School.' This method uses the school as a point of reference. Another example is, I am at the corner of Maple Street and Main Street. Both streets may be a good reference for anyone living in your town. Scientists must be able to pinpoint a feature they are studying. Scientists use a special system to describe locations. They use latitude and longitude as a reference. Lines of latitude and longitude form a grid. You may have used a grid system while doing graphing. This grid is centered on a reference point. Zero latitude is the equator. Lines of latitude run east to west. They divide the Earth from North to South. Lines of longitude run from north to south. They divide the Earth from East to West. Zero longitude runs through Greenwich, England. You may have heard the term, Greenwich Mean Time, or GMT. The system of latitude and longitude works well for objects that do not move.
"What are two ways of describing the same location?" is "Equator"?

OPTIONS:
- no
- yes
Output: no

Input: The after-action review had treated the CIA as the lead agency for any offensive against al Qaeda, and the principals, at their March 10 meeting, had endorsed strengthening the CIA's capability for that role. To the CTC, that meant proceeding with "The Plan," which it had put forward half a year earlier-hiring and training more case officers and building up the capabilities of foreign security services that provided intelligence via liaison. On occasion, as in Jordan in December 1999, these liaison services took direct action against al Qaeda cells. In the CTC and higher up, the CIA's managers believed that they desperately needed funds just to continue their current counterterrorism effort, for they reckoned that the millennium alert had already used up all of the Center's funds for the current fiscal year; the Bin Laden unit had spent 140 percent of its allocation. Tenet told us he met with Berger to discuss funding for counterterrorism just two days after the principals' meeting. While Clarke strongly favored giving the CIA more money for counterterrorism, he differed sharply with the CIA's managers about where it should come from. They insisted that the CIA had been shortchanged ever since the end of the Cold War. Their ability to perform any mission, counterterrorism included, they argued, depended on preserving what they had, restoring what they had lost since the beginning of the 1990s, and building from there-with across-the-board recruitment and training of new case officers, and the reopening of closed stations. To finance the counterterrorism effort, Tenet had gone to congressional leaders after the 1998 embassy bombings and persuaded them to give the CIA a special supplemental appropriation. Now, in the aftermath of the millennium alert, Tenet wanted a boost in overall funds for the CIA and another supplemental appropriation specifically for counterterrorism. To Clarke, this seemed evidence that the CIA's leadership did not give sufficient priority to the battle against Bin Laden and al Qaeda. He told us that James Pavitt, the head of the CIA's Directorate of Operations, "said if there's going to be money spent on going after Bin Laden, it should be given to him. My view was that he had had a lot of money to do it and a long time to do it, and I didn't want to put more good money after bad." The CIA had a very different attitude: Pavitt told us that while the CIA's Bin Laden unit did"extraordinary and commendable work," his chief of station in London "was just as much part of the al Qaeda struggle as an officer sitting in [the Bin Laden unit]." The dispute had large managerial implications, for Clarke had found Ailies in the Office of Management and Budget (OMB).

Does the response "They offered intelligence and took direct action against al Qaeda" correctly answer the question "How were liaisons involved in "The Plan" against al Qaeda cells?"?

OPTIONS:
- no
- yes
***
Output: yes

Input: 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.
"What does density tell?" is "How closely packed the particles of matter are"?

OPTIONS:
- no
- yes
Output:
yes