What is the name of the ancient supercontinent formed 28 million years ago?
8th Grade Science Fall Semester Exam Review

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Science
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8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Pangea
2.
FLASHCARD QUESTION
Front
According to the law of conservation of mass, if 10 grams of hydrogen react with 80 grams of oxygen, what is the total mass of water produced?
Back
90 grams
3.
FLASHCARD QUESTION
Front
Which continents show evidence of having similar fossils, supporting the idea of continental drift?
Back
South America and Africa
4.
FLASHCARD QUESTION
Front
What is a process that is not a chemical change?
Back
Freezing of water
5.
FLASHCARD QUESTION
Front
In which direction does air pressure naturally move?
Back
From high pressure to low pressure
6.
FLASHCARD QUESTION
Front
Define 'continental drift'.
Back
The theory that continents have moved over geological time and were once joined together.
7.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
Mass is neither created nor destroyed in a chemical reaction.
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