Big Bang
Flashcard
•
Science
•
7th - 10th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Big Bang Theory?
Back
The Big Bang Theory is the leading explanation for how the universe began, proposing that it started from a singular point and has been expanding ever since.
2.
FLASHCARD QUESTION
Front
How old do scientists believe the universe is?
Back
Scientists estimate the universe is approximately 13.8 billion years old.
3.
FLASHCARD QUESTION
Front
What are the original two elements formed in the universe?
Back
The original two elements in the universe are Hydrogen and Helium.
4.
FLASHCARD QUESTION
Front
What evidence supports the Big Bang Theory?
Back
Evidence includes the abundance of Hydrogen and Helium, the Cosmic Microwave Background Radiation (CMBR), and the observation that the universe is expanding.
5.
FLASHCARD QUESTION
Front
What does it mean that galaxies are moving away from us?
Back
It indicates that the universe is expanding, which supports the Big Bang Theory.
6.
FLASHCARD QUESTION
Front
What is Cosmic Microwave Background Radiation (CMBR)?
Back
CMBR is the afterglow radiation from the Big Bang, filling the universe and providing evidence of its early hot state.
7.
FLASHCARD QUESTION
Front
What is redshift in astronomy?
Back
Redshift occurs when light from an object is stretched to longer wavelengths, indicating that the object is moving away from the observer.
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