Question 1a of 10 ( 3 Convection and Equilibrium 185119 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: Which situation is in equilibrium? Choice Feedback A. The percentage of nitrogen gas in a room decreases steadily. That's not it. This is not an example of equilibrium. B. The amount of water in a cup decreases as it evaporates. That's not it. This is not an example of equilibrium. *C. The amount of air in a room never changes. That's correct! D. A blade of grass slowly grows taller. That's not it. This is not an example of equilibrium. Global Incorrect Feedback The correct answer is: The amount of air in a room never changes. ________________________________________ Question 1b of 10 ( 3 Convection and Equilibrium 248477 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: Which situation is an example of equilibrium? Choice Feedback A. The percentage of nitrogen gas in a room decreases steadily. That's not it. This is not an example of equilibrium. B. The amount of air in a room slowly increases. That's not it. This is not an example of equilibrium. *C. The amount of water in a cup does not change. That's correct! D. A blade of grass slowly grows taller. That's not it. This is not an example of equilibrium. Global Incorrect Feedback The correct answer is: The amount of water in a cup does not change. ________________________________________ Question 1c of 10 ( 3 Convection and Equilibrium 248486 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: Which is an example of a situation that is in equilibrium? Choice Feedback A. The amount of air in a room increases quickly when the door is opened. That's not it. This is not an example of equilibrium. B. The amount of water in a cup decreases as it evaporates. That's not it. This is not an example of equilibrium. *C. The amount of money in a bank account never changes. That's correct! D. A flower slowly grows taller. That's not it. This is not an example of equilibrium. Global Incorrect Feedback The correct answer is: The amount of money in a bank account never changes. ________________________________________ Question 2a of 10 ( 2 Density 185120 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: How are the density and temperature of air related? Choice Feedback *A. Higher temperature air is less dense. That's correct! B. Higher temperature air is more dense. That's not it. This is the incorrect relationship. C. The temperature and density are not related. That's not it. They are related. D. The more air there is, the higher the temperature and density. That's not it. The amount of air does not matter. Global Incorrect Feedback The correct answer is: Higher temperature air is less dense. ________________________________________ Question 2b of 10 ( 2 Density 248478 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: Which statement is true about the temperature and density of air? Choice Feedback *A. Lower temperature air is more dense. That's correct! B. Lower temperature air is less dense. That's not it. This is the incorrect relationship. C. The temperature and density of air are not related. That's not it. They are related. D. The less air there is, the higher the temperature and density. That's not it. The amount of air does not matter. Global Incorrect Feedback The correct answer is: Lower temperature air is more dense. ________________________________________ Question 2c of 10 ( 2 Density 248487 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: Which statement correctly describes how the density and temperature of air are related? Choice Feedback *A. Less-dense air has a higher temperature. That's correct! B. Very dense air has a very high temperature. That's not it. This is the incorrect relationship. C. You cannot determine anything about density from temperature. That's not it. They are related. D. The more air there is, the lower the temperature and density. That's not it. The amount of air does not matter. Global Incorrect Feedback The correct answer is: Less-dense air has a higher temperature. ________________________________________ Question 3a of 10 ( 1 Density 185121 ) Maximum Attempts: 1 Question Type: Text Fill In Blank Maximum Score: 5 Is Case Sensitive: false Correct Answer: density, densety, dencity Question: The mass per unit volume of a substance is called _____. Attempt Incorrect Feedback 1st This is not correct. This quantity is very important for convection. Correct Feedback That's correct! Global Incorrect Feedback The correct answer is: density. ________________________________________ Question 3b of 10 ( 1 Density 248474 ) Maximum Attempts: 1 Question Type: Text Fill In Blank Maximum Score: 5 Is Case Sensitive: false Correct Answer: density, densety, dencity Question: When you divide the mass of a substance by its volume, you get its _____. Attempt Incorrect Feedback 1st This is not correct. This quantity is very important for convection. Correct Feedback That's correct! Global Incorrect Feedback The correct answer is: density. ________________________________________ Question 3c of 10 ( 1 Density 248475 ) Maximum Attempts: 1 Question Type: Text Fill In Blank Maximum Score: 5 Is Case Sensitive: false Correct Answer: density, densety, dencity Question: To measure how much stuff is in a specified volume of a substance, scientists use _____. Attempt Incorrect Feedback 1st This is not correct. This quantity is very important for convection. Correct Feedback That's correct! Global Incorrect Feedback The correct answer is: density. ________________________________________ Question 4a of 10 ( 2 Convection and Equilibrium 185122 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: Which is part of the convection cycle in Earth's atmosphere? Choice Feedback A. Hot, denser air rises. That's not it. Hot air is less dense. B. Cold, denser air rises. That's not it. Denser air falls. C. Cold, less-dense air falls. That's not it. Cold air is denser. *D. Hot, less-dense air rises. That's correct! Global Incorrect Feedback The correct answer is: Hot, less-dense air rises. ________________________________________ Question 4b of 10 ( 2 Convection and Equilibrium 248479 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: Which happens as part of the convection cycle in Earth's atmosphere? Choice Feedback A. Hot, denser air rises. That's not it. Hot air is less dense. B. Hot, less less-dense air falls. That's not it. Denser air falls. C. Cold, less-dense air falls. That's not it. Cold air is denser. *D. Cold, denser air falls. That's correct! Global Incorrect Feedback The correct answer is: Cold, denser air falls. ________________________________________ Question 4c of 10 ( 2 Convection and Equilibrium 248488 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: Which is a step of the convection cycle in Earth's atmosphere? Choice Feedback A. Hot, less-dense air falls. That's not it. Less dense air rises. B. Cold, denser air rises. That's not it. Denser air falls. C. Cold, less-dense air falls. That's not it. Cold air is denser. *D. Hot, less-dense air rises. That's correct! Global Incorrect Feedback The correct answer is: Hot, less-dense air rises. ________________________________________ Question 5a of 10 ( 2 Convection and Equilibrium 185123 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: Inside Earth, a(n) ______ forms due to the different temperatures of the core and mantle. Choice Feedback A. conservation cell That's not it. This is an incorrect use of the term conservation. *B. convection cell That's correct! C. equilibrium cell That's not it. There is no such thing as an equilibrium cell. D. density cell That's not it. There is no such thing as a density cell. Global Incorrect Feedback The correct answer is: convection cell. ________________________________________ Question 5b of 10 ( 2 Convection and Equilibrium 248480 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: When the heated part of the mantle rises through the cooler part, this is an example of ______. Choice Feedback A. mantling That's not it. This is not a real term. *B. convection That's correct! C. equilibrium That's not it. This is not an example of equilibrium. D. density That's not it. They have density, but this is not an example of density. Global Incorrect Feedback The correct answer is: convection. ________________________________________ Question 5c of 10 ( 2 Convection and Equilibrium 248489 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: What is the term for the circular movement of material inside Earth's mantle? Choice Feedback A. conservation That's not it. While conservation happens, this does not describe the circular movement. *B. convection That's correct! C. equilibrium That's not it. This is not the correct term. D. density That's not it. It is due to density, but it is not called density. Global Incorrect Feedback The correct answer is: convection. ________________________________________ Question 6a of 10 ( 2 Conservation of Matter and Energy 185124 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: Which is an example of kinetic energy? Choice Feedback *A. A ball rolling across the floor That's correct! B. The energy stored in gasoline That's not it. This is an example of potential energy. C. A stretched spring That's not it. This is an example of potential energy. D. A book sitting at the top of a bookshelf That's not it. This is an example of potential energy. Global Incorrect Feedback The correct answer is: A ball rolling across the floor. ________________________________________ Question 6b of 10 ( 2 Conservation of Matter and Energy 248481 ) Maximum Attempts: 1 Question Type: Multiple Choice Maximum Score: 5 Question: Which is an example of kinetic energy? 1.3.3