[PRAKTIKUM] PEMANASAN GLOBAL SEDERHANA

Summary

This video presents a simple practical experiment on global warming, conducted by a group of students. The experiment demonstrates how heat is trapped in the atmosphere, contributing to global warming. Two glass jars are used, one covered with plastic and the other left open, both exposed to sunlight. After one hour, the jar covered with plastic shows trapped water vapor, while the open jar does not, illustrating how heat is trapped in the Earth's atmosphere. The video concludes with an explanation of how carbon dioxide causes the Earth’s temperature to rise, emphasizing the importance of understanding global warming.

Takeaways

• 😀 The experiment is focused on demonstrating global warming in a simple manner.
• 😀 The script introduces the group performing the experiment and provides an overview of the procedure.
• 😀 Global warming is explained as the trapping of heat in the atmosphere due to excess gases.
• 😀 The experiment involves two glasses labeled A and B, and the use of clear plastic and rubber bands.
• 😀 Step 1: Water is poured into both glasses equally, filling them halfway.
• 😀 Step 2: One glass is covered with plastic and sealed with a rubber band to prevent air exchange.
• 😀 Step 3: Both glasses are placed under direct sunlight for approximately 1 hour.
• 😀 After 1 hour, a difference is observed between the two glasses.
• 😀 Glass A, covered with plastic, shows trapped water vapor, while Glass B does not.
• 😀 The experiment demonstrates how sunlight entering a closed system causes heat to be trapped, similar to how carbon dioxide in Earth's atmosphere prevents heat from escaping, leading to global warming.
• 😀 The group concludes the experiment and offers an apology for any potential errors, concluding with a formal greeting.

Q & A

What is global warming as defined in the script?

Global warming is the trapping of heat in the atmosphere caused by gases in the air. These gases prevent the heat from the sun from escaping back into space, which disrupts Earth's balance.

What materials were used in the experiment?

The materials used in the experiment were two glass cups, plastic wrap, rubber bands, and water.

What was the main purpose of the experiment?

The experiment aimed to demonstrate how global warming works by showing how heat is trapped in the atmosphere, using two glasses with water as a simple model.

How did the experiment demonstrate the trapping of heat?

One glass was covered with plastic, while the other was left uncovered. After being exposed to sunlight for an hour, the glass with plastic trapped water vapor inside, while the uncovered glass did not, mimicking the greenhouse effect.

What was observed in the glass covered with plastic after one hour?

The glass covered with plastic showed water vapor trapped inside, indicating heat was being held in, similar to how the Earth's atmosphere traps heat.

Why was one glass covered with plastic and the other left uncovered?

The purpose of covering one glass with plastic was to simulate how the Earth's atmosphere traps heat. The uncovered glass represented how heat would escape without the atmosphere acting as a barrier.

What happens to sunlight that enters the atmosphere, according to the script?

Sunlight that enters the atmosphere is trapped by gases like carbon dioxide, which prevents it from escaping back into space. This leads to an increase in Earth's temperature, mimicking global warming.

What role does carbon dioxide play in the global warming process?

Carbon dioxide acts as a barrier that reflects sunlight back into the atmosphere, which causes the Earth's temperature to rise as more heat gets trapped.

Why was the experiment conducted in direct sunlight?

The experiment was conducted in direct sunlight to simulate real-world conditions where sunlight enters the Earth's atmosphere and to observe how heat is trapped when exposed to solar radiation.

What is the significance of the water vapor in the experiment?

The water vapor in the experiment symbolizes the trapped heat in the Earth's atmosphere. The condensation inside the covered glass shows how heat is retained, much like the greenhouse gases trapping heat on Earth.