Unit 2 Review
Flashcard
•
Physics, Science
•
8th Grade
•
Practice Problem
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
What is Newton's Third Law of Motion?
Back
For every action, there is an equal and opposite reaction.
2.
FLASHCARD QUESTION
Front
How does Newton's Third Law explain rocket propulsion?
Back
The hot gases expelled from the rocket move in one direction, while the rocket moves in the opposite direction with equal force.
3.
FLASHCARD QUESTION
Front
What are the energy transformations in a fire?
Back
Chemical energy transforms into thermal energy.
4.
FLASHCARD QUESTION
Front
What happens to an object's velocity when a force acts on it in the opposite direction?
Back
The object's velocity will decrease.
5.
FLASHCARD QUESTION
Front
What type of speed is represented by a horizontal line on a distance-time graph?
Back
Constant speed.
6.
FLASHCARD QUESTION
Front
What is the definition of thermal energy?
Back
Thermal energy is the total kinetic energy of particles in a substance.
7.
FLASHCARD QUESTION
Front
What is the difference between speed and velocity?
Back
Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.
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