PSSA Science Practice

Flashcard
•
Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What are Newton's Laws of Motion?
Back
Newton's Laws of Motion are three physical laws that together form the foundation for classical mechanics. They describe the relationship between a body and the forces acting on it, and the body's motion in response to those forces.
2.
FLASHCARD QUESTION
Front
What is gravitational potential energy?
Back
Gravitational potential energy is the energy an object possesses because of its position in a gravitational field. It is greatest at the highest point in a gravitational field.
3.
FLASHCARD QUESTION
Front
What is a lunar phase?
Back
A lunar phase is the appearance of the illuminated portion of the Moon as seen from Earth, which changes in a cycle of about 29.5 days.
4.
FLASHCARD QUESTION
Front
What is an inference?
Back
An inference is a conclusion reached based on evidence and reasoning rather than from explicit statements.
5.
FLASHCARD QUESTION
Front
What is the significance of the direction in which an object moves?
Back
The direction of movement is significant as it indicates the path an object takes and can affect the forces acting on it.
6.
FLASHCARD QUESTION
Front
What is Boyle's Law?
Back
Boyle's Law states that the pressure of a gas is inversely proportional to its volume when temperature is held constant.
7.
FLASHCARD QUESTION
Front
What is Mendel's Law of Inheritance?
Back
Mendel's Law of Inheritance describes how traits are passed from parents to offspring through genes.
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