Ujian Praktek Fisika | SMA | Suhu dan Kalor

Summary

In this experiment on temperature and heat, the group demonstrates the principles of heat transfer. Starting with lighting a candle, they place it on a plate and observe a plastic cup melting when placed above the flame. However, when a plastic cup containing water is placed above the flame, it does not melt, as the water absorbs the heat. The experiment further explores the effect of covering the candle with a glass, causing the flame to extinguish while the water inside the glass rises in temperature, illustrating how heat energy behaves in different conditions.

Takeaways

• 😀 Temperature is the degree of heat or coldness of an object.
• 😀 Heat or calor is a form of energy that moves from higher temperature objects to lower ones.
• 😀 The first experiment involves lighting a candle and placing it on a plate.
• 😀 A plastic cup placed directly over the candle flame will melt and create a hole in the cup.
• 😀 A plastic cup containing water placed over the candle flame does not melt.
• 😀 Water absorbs the heat, preventing the plastic cup from melting.
• 😀 Water can be poured into a container or plate for further experiments.
• 😀 When a glass jar is placed over the candle, the flame will extinguish.
• 😀 As the flame goes out, the water inside the glass jar will begin to rise.
• 😀 This demonstrates the absorption of heat by water and its effect on temperature change.

Q & A

What is the definition of temperature mentioned in the script?

Temperature is described as the degree of heat or coldness of an object.

What is calor or heat in the context of the experiment?

Calor or heat is a form of energy that can transfer from a hotter object to a cooler one.

What is the first step in the experiment?

The first step is to light a candle.

What happens when a plastic cup is placed directly over the candle flame?

The plastic cup becomes perforated and melts.

Why does the plastic cup with water inside not burn or melt when placed over the candle flame?

The water inside the plastic cup absorbs the heat, preventing the plastic from melting.

What happens when you pour water into a dish or container as mentioned in the script?

The water is poured into a dish, but the exact effects are not detailed in the provided script section.

What is the role of the glass container in the experiment?

The glass container is used to cover the candle, and when it is placed over the flame, the fire goes out and the water in the glass rises.

What happens to the fire when the glass is placed over the candle?

The fire goes out when the glass is placed over the candle.

Why does the water in the glass rise when the candle flame is covered?

The water rises due to changes in pressure and temperature when the flame is extinguished by the glass cover.

What is the significance of the experiment with heat transfer between objects?

The experiment demonstrates how heat transfers from one object to another, and how materials like water can absorb heat to prevent damage to other materials like plastic.