Can We Really Build Cars That Run Only On Water?

Can We Really Build Cars That Run Only On Water?

Assessment

Interactive Video

Physics, Science, Chemistry, Other, Engineering

KG - University

Hard

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The video explores the concept of water-fueled cars, highlighting the scientific challenges and limitations. It explains that while water itself is not a fuel, hydrogen extracted from water through electrolysis can be used as a combustible energy source. However, the energy required for electrolysis exceeds the energy gained from hydrogen combustion, making water-fueled cars impractical under current thermodynamic laws. Despite claims by some inventors, no verified water-fueled cars exist on the market. The video concludes with a note on the potential for future technological advancements.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main reason water cannot be used directly as a fuel in cars?

Water is not combustible.

Water molecules are too unstable.

Water is too abundant to be used as fuel.

Water is too expensive to use as fuel.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the process called that splits water into hydrogen and oxygen?

Combustion

Electrolysis

Photosynthesis

Oxidation

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is water a poor conductor of electricity?

It evaporates quickly.

It is too dense.

It lacks free ions.

It has too many impurities.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What fundamental scientific principle restricts the creation of energy from water?

The Law of Universal Gravitation

Newton's First Law

The Law of Conservation of Energy

The Theory of Relativity

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why have claims of water-fueled cars not been verified?

They are too expensive to produce.

They violate the laws of thermodynamics.

They are not environmentally friendly.

They require rare materials.