
Underwater Welding Concepts and Misconceptions

Interactive Video
•
Physics
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common misconception about underwater welding?
It uses no electricity.
It is done without any protective gear.
Electricity and water cannot be mixed.
It is only done in shallow waters.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In underwater welding, what is the role of the plasma?
It is used to insulate the weld.
It serves as a pathway for electrons.
It provides structural support.
It acts as a cooling agent.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main difference between wet and dry underwater welding?
Wet welding uses a habitat.
Dry welding is done without electricity.
Dry welding uses a chamber to keep water out.
Wet welding is done in a water-free environment.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does dry welding prevent the buildup of gases?
By using a special type of electrode.
By rotating air in and out of the chamber.
By using a water filtration system.
By employing a vacuum seal.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of current is used in wet welding?
Alternating current with positive polarity.
Direct current with negative polarity.
Alternating current with negative polarity.
Direct current with positive polarity.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the knife switch in wet welding?
To control the temperature of the weld.
To adjust the pressure in the habitat.
To safely control power to the welder.
To regulate the flow of water.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is created when an underwater welder strikes an arc?
A water vortex.
A vacuum seal.
A gaseous bubble.
A magnetic field.
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