Surface tension experiment

Summary

In this engaging science experiment by Kids Men's Science, host Ken demonstrates the power of surface tension. Using a glass filled to the brim with water and a credit card, Ken challenges viewers to predict how many pennies can balance on the card before it topples. The experiment shows that only two pennies can be stacked on the card when it's empty, but with the glass full, the card supports an impressive 14 pennies due to the water's surface tension. This simple yet fascinating experiment encourages viewers to try it at home and share their results, while also promoting scientific curiosity.

Takeaways

• 🔬 The experiment demonstrates the concept of surface tension.
• 👨‍🔬 Hosted by Ken from Kids Men's Science, the experiment is designed to be fun and easy.
• 💧 Materials needed include a cup, water, a credit or business card, and coins (specifically pennies in the video).
• 📏 The card should be made of hard plastic, similar to a credit card.
• 🤔 The viewer is encouraged to predict how many coins can be stacked on the card before it falls over.
• 🧐 The first experiment shows that without water, only two or three pennies can be stacked on the card.
• 💧 In the second experiment, water is filled to the rim of the cup, and the card is placed on top.
• 📈 The number of stacked pennies increases significantly when the card is on water due to surface tension.
• 🏺 Surface tension allows 14 pennies to be stacked on the card, surpassing the initial count without water.
• 👍 The video concludes with a call to action for viewers to try the experiment at home and share their results.
• 📺 The host reminds viewers to like and subscribe to the channel for more science experiments.

Q & A

What is the main topic of the experiment presented in the script?

The main topic of the experiment is surface tension.

Who is the presenter of the experiment?

The presenter of the experiment is Ken from Kids Men's Science.

What materials are needed for the experiment according to the script?

The materials needed for the experiment are a cup, water, a credit card or business card, coins (specifically pennies in the script), and additional water for the second part of the experiment.

How many coins are needed for the experiment?

About 10 to 15 coins are needed for the experiment.

What is the purpose of using the same size coin in the experiment?

Using the same size coin ensures consistency and accuracy in the experiment's results.

What is the initial prediction made in the script about the experiment?

The initial prediction is about how many coins can stack up on the card before falling over.

What happens in the first experiment when the glass is empty?

In the first experiment, with an empty glass, the credit card can only hold two or possibly three pennies before falling over.

How does pouring water into the glass affect the experiment?

Pouring water into the glass and placing the credit card on the rim allows for more pennies to be stacked on the card due to the effect of surface tension.

What is the role of surface tension in this experiment?

Surface tension in the experiment helps hold the card down against the water's surface, allowing more pennies to be stacked on it.

How many pennies were successfully stacked on the card in the second experiment?

In the second experiment, 14 pennies were successfully stacked on the card before the 15th penny knocked it over.

What is the call to action for viewers at the end of the script?

The call to action is for viewers to try the experiment at home, comment on their results, and to click thumbs up and subscribe to the channel if they enjoyed the experiment.