Question:
Sound waves are mechanical waves. They can travel only through matter. They cannot travel through empty space. This was demonstrated in the 1600s by a scientist named Robert Boyle. Boyle placed a ticking clock in a sealed glass jar. The clock could be heard ticking through the air and glass of the jar. Then Boyle pumped the air out of the jar. The clock was still running, but the ticking could not be heard. Thats because the sound couldnt travel without air particles to transfer the sound energy. Is there any other place where sound cannot be heard? Here is a hint: is there any other place that does not have air molecules? Thats right, in space sound cannot be transferred. So can astronauts hear each other? Yes, they can, because they are in enclosed space stations or pressurized suits.In both cases, they are surrounded by air molecules. If they left their space ship and did not use their electronics, they would not be able to hear each other. Next time you watch a science fiction movie, think about this factoid. When spaceships are destroyed by hostile alien beings, there would be no sound heard. Sound waves can travel through many kinds of matter. After reading the above, is "He placed a ticking clock in a jar and then removed the air from the jar." the correct answer to the question "How did Robert Boyle prove how sound waves travel?"? OPTIONS:
- no
- yes

Answer:
yes

Question:
Howland talked but little on their way back to camp. The scene that he had just witnessed affected him strangely; it stirred once more within him all of his old ambition, all of his old enthusiasm, and yet neither found voice in words. He was glad when the dinner was over at Thorne's, and with the going of the mail sledge and the senior engineer there came over him a still deeper sense of joy. Now _he_ was in charge, it was _his_ road from that hour on. He crushed MacDonald's hand in a grip that meant more than words when they parted. In his own cabin he threw off his coat and hat, lighted his pipe, and tried to realize just what this all meant for him. He was in charge--in charge of the greatest railroad building job on earth--_he_, Jack Howland, who less than twenty years ago was a barefooted, half-starved urchin peddling papers in the streets where he was now famous! And now what was this black thing that had come up to threaten his chances just as he had about won his great fight? He clenched his hands as he thought again of what had already happened--the cowardly attempt on his life, the warnings, and his blood boiled to fever heat. That night--after he had seen Meleese--he would know what to do. But he would not be driven away, as Gregson and Thorne had been driven. He was determined on that. After reading the above, is "John Thorne" the correct answer to the question "Who had an attempt made on his life?"? OPTIONS:
- no
- yes

Answer:
no

Question:
Adrienne Saunders is happily married to her art dealer husband , Jack . They have a daughter named Mary . Adrienne hears from a friend that she thought she saw Jack in town when he claimed to be on an out of town business trip . Adrienne confronts him , but he denies being in town , and their lives continue . Soon after a museum curator is mysteriously murdered , and a relic that Jack bought for the museum is revealed to be a fake . Jack is placed under suspicion , and then Adrienne receives word from the police that Jack perished in a car accident . In trying to wrap up Jack 's affairs , Adrienne begins to suspect that her husband had switched identities with a high school classmate , Frank Sullivan . When she sees a high school yearbook picture of her husband attributed to Sullivan , she is convinced . She tracks down a relative of Saunders , who confirms that Frank and Jack were inseparable in high school . After Jack died , the relative never saw Frank again . She explained that Frank 's father was an alcoholic and that his mother worked as a toll booth operator . She directs Adrienne to Frank 's mother , who lives in a rundown apartment in Brooklyn . Frank 's mother bitterly receives the news that she has a granddaughter , telling Adrienne that Frank was always selfish and that he never looked in on her . A stalker lurks at Adrienne 's loft . He comes in to Adrienne 's bed while she is asleep and caresses her . He watches Mary , who is spooked by the man in her room at night . After reading the above, is "Selfish and secretive" the correct answer to the question "What type of person is Frank?"? OPTIONS:
- no
- yes

Answer:
yes

Question:
Fossils give clues about major geological events. Fossils can also give clues about past climates. Fossils of ocean animals on the top of a mountain? Ocean animals have been found on the Earths tallest mountain. Its hard to believe, but it is true. These fossils were found at the top of Mt. Everest. Mt. Everest is the highest mountain on Earth. These fossils showed that this entire area was once at the bottom of a sea. It can only mean that Mt. Everest was uplifted. In fact, the entire Himalaya mountain range was raised. It was forced up from the collision of two continents. Fossils of plants are found in Antarctica. Now, Antarctica is almost completely covered with ice. Plants do not grow in Antarctica. According to fossils, they once did. This means that Antarctica was once much warmer than it is now. These fossils tell us about Antarcticas past climate. After reading the above, is "Antarctica has always been cold" the correct answer to the question "What does the fact that fossils have been found on the top of Antarctica?"? OPTIONS:
- no
- yes

Answer:
no