1. Water bubbles up through a hot spring in Yellowstone National Park. What method of heat transfer is this?
A. Conduction
B. Radiation
C. Solar
D. Convection
2. Heat transferred between two substances in direct contact with each other is known as which type of heat transfer?
A. Conduction
B. Radiation
C. Electric
D. Convection
3. When warm air rises and cooler air sinks towards earth's surface, what is this known as?
A. Radiation
B. Tropical Zone
C. Convection currents
D. Climate currents
4. In which temperature zone does the sun's rays strike at a lower angle, making this zone's climates colder than other temperature zone's?
A. Tropical zone
B. Polar zone
C. Temperate zone
D. Temperature zone
1. Convection
2. Conduction
3. Convection Currents
4. Polar Zone
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1. The method of heat transfer in this scenario is convection. To understand why, let's break it down. Heat transfer occurs in three ways: conduction, radiation, and convection.
Conduction is the transfer of heat through physical contact between objects. If the water was being heated by direct contact with a hot surface, then conduction would be the correct answer. However, that is not the case here.
Radiation is the transfer of heat through electromagnetic waves. For instance, when you feel the warmth of the sun on your skin, that is heat being transferred through radiation. In this scenario, the heat is not being transferred through radiation as it specifically mentions that water bubbles up.
Solar refers to heat transfer from the sun, which could be through radiation. However, in this particular scenario, it is not directly mentioned that the hot spring is being heated by the sun's rays.
Convection is the transfer of heat through the movement of fluids (liquids or gases). So, when the water bubbles up through the hot spring, it is being heated by the hot rocks beneath it. The heated water then rises to the surface, and cooler water flows in to take its place, creating a continuous circulation of the fluid. This upward movement of the hot water and the downward flow of cooler water in the hot spring is an example of convection.
Therefore, the correct answer is D. Convection.
2. The heat transfer between two substances in direct contact with each other is known as conduction.
Conduction occurs when two objects at different temperatures come into contact and heat is transferred from the hotter object to the colder object. The particles in the hotter object have more energy, so they collide with the particles in the colder object and transfer some of their energy, which causes the colder object to heat up.
On the other hand, radiation is the transfer of heat through electromagnetic waves, such as the warmth you feel from a campfire or the heat you receive from the sun. Convection, as mentioned earlier, is the transfer of heat through the movement of fluids.
Therefore, the correct answer is A. Conduction.
3. When warm air rises and cooler air sinks towards the Earth's surface, it is known as convection currents.
Convection currents occur due to the different densities of warm and cool air. When air is heated, it becomes less dense and rises. This rising warm air creates an area of low pressure. As the warm air rises, it cools down, becomes denser, and starts to sink. This sinking cool air creates an area of high pressure. The cycle repeats, creating a continuous circulation of warm and cool air.
This process is responsible for many weather phenomena, such as the formation of clouds, wind patterns, and the distribution of heat around the Earth. It is an essential mechanism in the Earth's atmosphere and plays a significant role in shaping climates.
Therefore, the correct answer is C. Convection currents.
4. The temperature zone where the sun's rays strike at a lower angle, making it colder than other temperature zones, is the polar zone.
The Earth is divided into three main temperature zones: the tropical zone, the temperate zone, and the polar zone. The tropical zone receives the most direct sunlight and is generally the warmest, while the polar zone receives sunlight at a lower angle and is therefore colder.
The angle at which the sun's rays strike the Earth's surface affects the intensity of sunlight received. In the polar zone, the sun's rays are spread out over a larger area, leading to less concentrated heat. The result is colder temperatures compared to the other temperature zones.
Therefore, the correct answer is B. Polar zone.
who is right
the correct answers are
D
A
C
D