Why is the current definition of the kilogram considered problematic?

Redefining the Kilogram

Interactive Video
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Physics, Chemistry, Science
•
10th Grade - University
•
Hard

Sophia Harris
FREE Resource
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It is based on a physical object that can change over time.
It is too complex to understand.
It is not recognized internationally.
It is based on outdated technology.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main goal of redefining the kilogram?
To make it easier to measure.
To reduce its weight.
To base it on a constant of nature.
To align it with the meter.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which two methods were primarily considered for redefining the kilogram?
Using a silicon sphere and a Kibble balance.
Using a platinum bar and a silicon sphere.
Using a Kibble balance and a platinum bar.
Using a silicon sphere and a gold bar.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Kibble balance used to measure?
The gravitational constant.
Planck's constant.
The speed of light.
Avogadro's number.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the Kibble balance, what are the two modes of operation?
Weighing mode and velocity mode.
Current mode and voltage mode.
Magnetic mode and electric mode.
Static mode and dynamic mode.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is voltage measured accurately in the Kibble balance?
Using a laser interferometer.
Using Josephson junctions.
Using a gravimeter.
Using a voltmeter.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What quantum effect is used to measure resistance in the Kibble balance?
Quantum Hall effect.
Quantum superposition.
Quantum entanglement.
Quantum tunneling.
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