You are in a room of empty chairs. As the chairs fill with people, you become hotter and hotter. A ceiling fan is turned on, and you feel cooler. You gained heat by _________ and lost heat to the environment by _________ .
a. Conduction … convection
b. Radiation … convection
c. Radiation … conduction
d. Convection … radiation

Question

a. Conduction … convection

b. Radiation … convection

c. Radiation … conduction

d. Convection … radiation

Accepted Answer

Hey everyone. Let's take a look at this question together. Heat exchange between living organisms and their environment can take place by what Let's recall the different pathways of which heat can be exchanged between living organisms and their environment. And try to figure out the correct answer. Looking at our options here, we can see answer choice A. Is conduction, which we know that conduction is a type of heat exchange which is done by direct contact. So heat exchange through direct contact, meaning you actually have to touch the surface in order to exchange heat. And a good example of this could be somebody who is sitting on a warm rock trying to warm their body. The answer choice A. Is a good option. Looking at answer choice B. We see convection which we know that convection is another type of heat exchange, but this one is through the circulation of heat which can be done via air or water. And that's a way to transfer. And a good example of this could be warming yourself outside, like when the hot air rises from the ground and it warms you. Making answer choice B. Another good option for heat exchange between those living organisms and their environment. And then lastly, we see radiation which we know radiation has to do with those heat waves. Making it another way for heat exchange through the heat waves that are released. And so we can actually absorb those heat waves so they can be absorbed and they can also be reflected as well as transferred so reflected or even transferred between uh an environment and a living organism. So answer choice C. Is another good option, Which means that A. B. And C. Are all ways that heat could be exchanged between living organisms and their environment. Making answer choice D. All the above the best option here for our answer. And just to understand the question better, here's a little diagram showing the ground, and so the ground heats the air via conduction or answer choice. A. That warm air rises upwards through convection or answer choice B. And lastly here, you can see the sun is heating the ground through radiation or answer choice C. And that is how heat can be exchanged between different living organisms and the environment. Making answer choice D. The best option. I hope you find this video to be helpful. Thank you and goodbye.

Verified video answer for a similar problem:

Key Concepts

Heat Transfer Mechanisms

Conduction

Convection