Object A and Object B made direct contact for 15 minutes. The temperature of each object was measured before contact was made and after the objects were separated. Object A’s temperature increased by 2°C
, and Object B’s temperature dropped by 5°C
. Which statement accurately describes the change that has occurred?(1 point)
Responses
The temperature changes indicate that the motion of molecules in Object B sped up faster than that of molecules in Object A.
The temperature changes indicate that the motion of molecules in Object B sped up faster than that of molecules in Object A.
The temperature changes indicate that the motion of molecules in both objects decreased.
The temperature changes indicate that the motion of molecules in both objects decreased.
The temperature changes indicate that kinetic energy has transferred from Object B to Object A.
The temperature changes indicate that kinetic energy has transferred from Object B to Object A.
The temperature changes indicate that kinetic energy contained in Object B has released to the air.
The correct statement is: The temperature changes indicate that kinetic energy has transferred from Object B to Object A.
How is a volcanic eruption explained by convection?(1 point)
Responses
Super-heated magma, liquid rock, is created beneath Earth’s surface. The magma is lighter than the solid rock above it, so it rises to collect in pockets toward the surface. As a pocket fills, the pressure inside increases. When the pressure of the rising magma is greater than the downward pressure of the solid rock, the magma can break a vent through to the surface. There, the magma becomes lava, and cools. Cooled lava adds to the downward pressure of solid rock, and the cycle repeats.
Super-heated magma, liquid rock, is created beneath Earth’s surface. The magma is lighter than the solid rock above it, so it rises to collect in pockets toward the surface. As a pocket fills, the pressure inside increases. When the pressure of the rising magma is greater than the downward pressure of the solid rock, the magma can break a vent through to the surface. There, the magma becomes lava, and cools. Cooled lava adds to the downward pressure of solid rock, and the cycle repeats.
Super-heated magma, liquid rock, is created beneath Earth’s surface. Because it is created under a thick layer of solid rock, the magma is under so much pressure that it explodes out of the earth’s mantle. When the explosion happens the pressure lessens, so the magma can undergo a state change and become solid rock, and the cycle repeats.
Super-heated magma, liquid rock, is created beneath Earth’s surface. Because it is created under a thick layer of solid rock, the magma is under so much pressure that it explodes out of the earth’s mantle. When the explosion happens the pressure lessens, so the magma can undergo a state change and become solid rock, and the cycle repeats.
Super-heated magma, liquid rock, is created beneath Earth’s surface. The magma is lighter than the solid rock above it, so it rises to collect in pockets toward the surface. As a pocket fills, the pressure increases, which causes the magma to form water vapor and become super-heated steam. When the pressure of the rising steam is greater than the downward pressure of the solid rock, it can break a vent through to the surface. There, the magma becomes lava, and cools. Cooled lava adds to the downward pressure of solid rock, and the cycle repeats.
Super-heated magma, liquid rock, is created beneath Earth’s surface. The magma is lighter than the solid rock above it, so it rises to collect in pockets toward the surface. As a pocket fills, the pressure increases, which causes the magma to form water vapor and become super-heated steam. When the pressure of the rising steam is greater than the downward pressure of the solid rock, it can break a vent through to the surface. There, the magma becomes lava, and cools. Cooled lava adds to the downward pressure of solid rock, and the cycle repeats.
Super-heated magma, liquid rock, is created beneath Earth’s surface. The magma is lighter than the solid rock above it, so the solid rock forms a large cone around the magma to release pressure. When the pressure of the rising magma is greater than the downward pressure of the solid rock, it fills the cone and forms a volcano. There, the magma becomes lava, and cools. Cooled lava adds to the downward pressure of solid rock, and the cycle repeats.
Super-heated magma, liquid rock, is created beneath Earth’s surface. The magma is lighter than the solid rock above it, so the solid rock forms a large cone around the magma to release pressure. When the pressure of the rising magma is greater than the downward pressure of the solid rock, it fills the cone and forms a volcano. There, the magma becomes lava, and cools. Cooled lava adds to the downward pressure of solid rock, and the cycle repeats.
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The correct statement is: Super-heated magma, liquid rock, is created beneath Earth’s surface. The magma is lighter than the solid rock above it, so it rises to collect in pockets toward the surface. As a pocket fills, the pressure inside increases. When the pressure of the rising magma is greater than the downward pressure of the solid rock, the magma can break a vent through to the surface. There, the magma becomes lava, and cools. Cooled lava adds to the downward pressure of solid rock, and the cycle repeats.
is that a b c or d
Apologies for not providing the letter options in my previous response. The correct answer is:
a) Super-heated magma, liquid rock, is created beneath Earth’s surface. The magma is lighter than the solid rock above it, so it rises to collect in pockets toward the surface. As a pocket fills, the pressure inside increases. When the pressure of the rising magma is greater than the downward pressure of the solid rock, the magma can break a vent through to the surface. There, the magma becomes lava, and cools. Cooled lava adds to the downward pressure of solid rock, and the cycle repeats.
A car’s radiator prevents the engine from overheating. How does it do this?(1 point)
Responses
The radiator pumps coolant in a continuous flow through the car’s engine. Heat from the engine is drawn into the coolant and pulled away from the engine block and back to the radiator. The radiator emits heat waves that transfer heat from the coolant to the air outside.
The radiator pumps coolant in a continuous flow through the car’s engine. Heat from the engine is drawn into the coolant and pulled away from the engine block and back to the radiator. The radiator emits heat waves that transfer heat from the coolant to the air outside.
The radiator pumps coolant in a continuous flow through the car’s engine. Heat from the engine is drawn into the coolant and pulled away from the engine block and back to the radiator. The radiator’s contact with the car’s cool hood lets it use conduction to transfer heat from the coolant to the air outside.
The radiator pumps coolant in a continuous flow through the car’s engine. Heat from the engine is drawn into the coolant and pulled away from the engine block and back to the radiator. The radiator’s contact with the car’s cool hood lets it use conduction to transfer heat from the coolant to the air outside.
The radiator pumps coolant in a continuous flow through the car’s engine. Heat from the engine is drawn into the coolant and pulled away from the engine block and back to the radiator. The radiator becomes so hot that the coolant loses cohesion, becomes a gas, and is vented into the air outside.
The radiator pumps coolant in a continuous flow through the car’s engine. Heat from the engine is drawn into the coolant and pulled away from the engine block and back to the radiator. The radiator becomes so hot that the coolant loses cohesion, becomes a gas, and is vented into the air outside.
The radiator pumps coolant in a continuous flow through the car’s engine. Heat from the engine is drawn into the coolant and pulled away from the engine block and back to the radiator. The radiator uses convection to spray the hot coolant liquid into the air outside.
The correct answer is: The radiator pumps coolant in a continuous flow through the car’s engine. Heat from the engine is drawn into the coolant and pulled away from the engine block and back to the radiator. The radiator emits heat waves that transfer heat from the coolant to the air outside.
can you do a b c or d please
Apologies for not providing the letter options in my previous response.
The correct answer is:
a) The radiator pumps coolant in a continuous flow through the car’s engine. Heat from the engine is drawn into the coolant and pulled away from the engine block and back to the radiator. The radiator emits heat waves that transfer heat from the coolant to the air outside.