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: "When there is more friction, is it harder or easier to push an object across the floor?"

Answer: "Yes"

Response: yes

Plants also detect the daily cycle of light and darkness. Do you know how plants respond to these changes? Some plants open their leaves during the day. It is during these hours the plant can collect sunlight. At night, the plant closes its leaves to prevent water loss. Many plants respond to the change in the length of the day. As days grow shorter, some plants respond by going dormant. Dormant is when a plant suspends its growth. It does this in order to survive. Shorter days signal the coming of winter. Winter in most areas means extreme cold. It is also very dry in the winter months. As winter approaches, some plants respond by their leaves changing color. After the change in color, they fall off. This dormancy period helps trees. It allows them to survive the cold and dry winter. Plants only want to grow when conditions are right.

Question: "When and why do plants go dormant?"

Answer: "As winter approaches, to survive extreme cold and dry winters"

Response: yes

The film is set in Igloolik in the Eastern Arctic wilderness at the dawn of the first millennium . http://atanarjuat.com/legend/legend_film.php The wind is blowing over a bleak snowy landscape while a man tries to herd away some marauding dogs . We hear the voice of an old man singing a childish song . Inside a stone house a strange shaman by the name of Tungajuaq , who comes from up north , is singing playfully to the gathered community and camp leader Kumaglak . But among the spectators there are some mistrustful faces . Flash forward to another day . Qulitalik is bidding goodbye to his sister Panikpak , wife of Kumaglak , promising to come if she calls for help in her heart . She gives him her husband's rabbit's foot for spiritual power . Qulitalik tells his sister , '' Tulimaq is the one they 'll go after now . '' It seems that Qulitalik is leaving to escape a threat , and the hope is that one day he will return to help . As Panikpak watches him leave , we hear a voice-over from a woman : '' We never knew what he was or why it happened . Evil came to us like Death . It just happened and we had to live with it . '' Flash back to the original scene in the stone house . The visitor and the camp leader Kumaglak are in a '' friendly '' spiritual duel involving binding in leather thongs . But Panikpak is startled when the stone lamp in front of her breaks in half , and , to the horror of those present , Kumaglak falls over dead . The visitor removes the leader's walrus-tooth necklace from Kumaglak's body , and , passing by Tulimaq , he puts the necklace around the neck of Sauri , the son of the murdered leader Kumaglak , saying , '' Be careful what you wish for '' .

Question: "Does Qulitalik have a brother or a sister?"

Answer: "A sister"

Response: yes

Reuters Holdings PLC said Michael Reupke resigned as general manager to pursue unspecified interests, a move the news organization termed an "amicable separation." Mr. Reupke, 52 years old and a 27-year Reuters veteran, had been the information-services company's general manager for only six months. His appointment to that post, which has senior administrative, staff and policy responsibilities, followed a several-year tenure as Reuters's editor in chief. No successor was named, and Mr. Reupke's duties will be split among three other senior Reuters executives, the company said. In a telephone interview, Mr. Reupke said his departure was for "personal reasons," which he declined to specify. "There is no business reason for my departure," nor any disagreement over policy, he added. He also rejected reports that his departure stemmed from disappointment the general manager's post hadn't also led to a board directorship at the London-based news organization. Mr. Reupke was one of three executives on Reuters's eight-person executive committee who didn't also serve on the company's board of directors. "If I were choosing the people of tomorrow, I would have chosen the people who are now on the board," he said. A Reuters spokesman said the departure reflects "no change in strategy or profits." Mark Shepperd, an analyst at UBS Philips & Drew in London, said, "I suspect (the departure) will be fairly irrelevant for the company. I would be very surprised if his departure signals any change in strategy or change in profit expectations." On London's Stock Exchange, Reuters shares rose five pence to 913 pence ($14.43). In the U.S. over-the-counter market, American depositary shares for Reuters, each representing three shares in the London market, closed unchanged at $43.875. The senior of the three executives who will assume Mr. Reupke's duties is Nigel Judah, 58, finance director and a Reuters board director. Peter Holland, 45, deputy general manager, becomes director of corporate affairs. And Patrick Mannix, 46, international technical manager, becomes director of group quality programs.

Question: "What impact has Reupke's departure had on Reuters?"

Answer: "Reuters has failed in his absence"

Response:
no