What is the approximate amount of energy in every cubic centimeter of empty space?

Understanding Energy in Empty Space and Virtual Particles

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

Sophia Harris
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
10 to the minus 8th ergs
10 to the 10th ergs
10 to the 8th ergs
10 to the minus 10th ergs
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What phenomenon is thought to be caused by dark energy?
The creation of black holes
The formation of stars
The slowing down of the universe
The speeding up of the universe's expansion
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key reason scientists believe empty space contains energy?
Because it is filled with light
Due to the presence of real particles
Due to the presence of virtual particles
Because it is completely empty
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did Willis Lamb and Robert Retherford discover about hydrogen energy levels?
They discovered three energy levels
They found a single energy level
They discovered two closely spaced energy levels
They found no energy levels
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the fine-structure constant, alpha, approximately equal to?
1/137
1/100
1/50
1/200
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are virtual particles difficult to observe directly?
They are too large
They exist only in theory
They have a strange existence and are not consistent with real particles
They are always visible
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the modern understanding of particles in quantum field theory?
They are vibrations in fields
They are static entities
They are invisible forces
They are solid objects
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