What is the main reason for redefining the kilogram?

Understanding the Redefinition of SI Units

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

Sophia Harris
FREE Resource
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To make it lighter
To base it on a fundamental constant
To change its shape
To make it heavier
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What constant is used to redefine the kilogram?
Gravitational constant
Planck's constant
Boltzmann constant
Avogadro's constant
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method is NOT used to measure Planck's constant?
Silicon sphere
Watt balance
Pendulum swing
Electromagnetic force
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main challenge in fixing the value of Planck's constant?
Making it heavier
Finding a new physical object to base it on
Reducing its value
Ensuring it is consistent with current measurements
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How will the redefinition of the kilogram affect the mole?
It will decrease the mole's value
It will make the mole obsolete
It will increase the mole's value
It will fix Avogadro's constant
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What will the ampere be based on after the redefinition?
The temperature of water
The speed of light
The charge of an electron
The mass of a kilogram
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between Planck's constant and Avogadro's constant?
They are directly related
They are the same
They are inversely related
They are unrelated
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