What causes tectonic plates to suddenly move after being stuck?
8th Grade Science STAAR Benchmark Review

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Science
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8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Unbalanced forces build up and are released when the plates finally move.
2.
FLASHCARD QUESTION
Front
What does Newton's 1st law state?
Back
An object at rest will stay at rest until acted upon by an unbalanced force.
3.
FLASHCARD QUESTION
Front
What does Newton's 2nd law state?
Back
The acceleration of an object depends on the mass of the object and the amount of force applied (F=ma).
4.
FLASHCARD QUESTION
Front
What does Newton's 3rd law state?
Back
For every action, there is an equal and opposite reaction.
5.
FLASHCARD QUESTION
Front
Which electromagnetic waves have the highest energy?
Back
Gamma rays are the most dangerous and have the highest energy.
6.
FLASHCARD QUESTION
Front
How do you calculate density?
Back
Density = mass/volume.
7.
FLASHCARD QUESTION
Front
What is the density of an object with a mass of 4g and a volume of 2cm³?
Back
Density = 4g / 2cm³ = 2 g/cm³.
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