Latihan Soal Penghantar Panas

The correct answer is "dapat berpindah". This means that heat can transfer from one object to another. Heat is a form of energy that can be transferred through conduction, convection, or radiation. It can flow from a hotter object to a cooler object until both objects reach thermal equilibrium. Therefore, heat is not stationary and can move or transfer between objects.

Gelas plastik bukanlah konduktor panas karena bahan plastik memiliki sifat isolator termal yang rendah. Artinya, mereka tidak dapat dengan mudah menghantarkan panas dari satu titik ke titik lainnya seperti konduktor panas lainnya seperti wajan, panci, atau sendok aluminium. Sebaliknya, gelas plastik cenderung mempertahankan suhu aslinya lebih lama dan tidak membiarkan panas dengan mudah masuk atau keluar.

The correct answer is "tangan kita tidak kepanasan saat menyetrika" because plastic is a poor conductor of heat. Therefore, using a plastic handle on an iron helps to prevent the heat from transferring to our hands while ironing, ensuring that our hands do not get hot or burned while using the iron.

The question is asking which objects are conductors. Conductors are materials that allow the flow of electric current. From the given options, iron ruler and fork are conductors, as they are made of metal which is a good conductor of electricity. Therefore, the correct answer is 1 and 4.

A plastic ruler is considered a good insulator of heat because plastic is a poor conductor of heat. This means that it does not allow heat to easily pass through it. In contrast, metal objects like keys, knives, and aluminum scissors are good conductors of heat, meaning they can easily transfer heat. Therefore, the plastic ruler is the correct answer as an insulator of heat.

The correct answer is "terjadi perpindahan panas dari air ke udara langsung dan dari air ke gelas." Ketika air panas didiamkan, terjadi perpindahan panas dari air ke udara di sekitarnya, sehingga suhu air menjadi lebih rendah. Selain itu, terjadi juga perpindahan panas dari air ke gelas yang menyebabkan suhu air semakin menurun.

The correct answer is cerek aluminium. Aluminum is a good conductor of heat, meaning it can transfer heat quickly. When hot water is poured into the aluminum pitcher, the heat from the water will be transferred to the aluminum material, causing it to cool down faster compared to the other materials such as glass, plastic, or ceramic. Therefore, the water in the aluminum pitcher will take the longest time to cool down.

The correct answer is "memantulkan panas" which means "reflecting heat" in English. The glass layer in a thermos acts as an insulator and prevents heat from escaping or entering the container. It reflects the heat back into the thermos, keeping the contents hot or cold for a longer period of time.

Perambatan panas adalah proses perpindahan panas dari satu benda ke benda lain melalui perantaraan medium yang dapat menghantarkan panas, seperti udara atau air. Konduksi adalah salah satu bentuk perambatan panas yang terjadi ketika panas mengalir melalui suatu benda atau medium yang padat, seperti logam. Konduktor adalah material yang memiliki kemampuan untuk menghantarkan panas dengan baik. Isolasi, di sisi lain, adalah material atau lapisan yang digunakan untuk menghentikan atau memperlambat perambatan panas.

The given correct answer is "isolator panas." This is because the term "isolator" refers to a material or substance that does not conduct heat well, meaning it has low thermal conductivity. Therefore, an "isolator panas" would be a material that is used to prevent the transfer of heat, such as insulating materials used in thermal insulation.