Heat can be transferred in three ways: by conduction, by convention, and by radiation. Conduction is transferred of energy from one molecule to another by direct contact.
Answer:
Safety precautions in the heat transfer laboratory depend on the equipment that you will use.
Explanation:
The safety measures or precautions that an experimenter needs to bear in mind depends on the types of equipment he/she's using in experimenting. But, there are general precautions to consider.
There are three different ways to transfer heat, including convection, conduction, and radiation. <em><u>Convection</u></em><u> </u>pertains to the heat transfer between liquid or gas molecules moving circularly. Through that, their temperature and density are both affected. <em><u>Conduction</u></em><em> </em>and radiation are polarities. The heat transfer happened when two objects touched one another in conduction. On the other hand, <em><u>radiation</u></em> occurs when two objects do not touch each other.
Generally, precautions in performing these three experiments include the following:
- Careful handling of glassware to avoid cracking or breaking it.
- Avoid spilling the liquid or any content of the glassware.
- Do not touch any hot object.
- Use a hot pad to transfer hot objects from different places.
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Answer:
In his photographs, Riis showed that the unincorporated could be dangerous; that their abodes were dirty; that neighborhood streets were crime-ridden. By appealing to the consciences and fears of middle-class and upper-class city residents, Riis helped initiate reform efforts.
Explanation:
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