Physical Science Review test
Flashcard
•
Science
•
7th Grade
•
Practice Problem
•
Easy
Standards-aligned
KAREN VILLALOBOS
Used 1+ times
FREE Resource
Student preview
20 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Which phrase best describes a gravitational force?
Back
a force that pulls objects toward each other
Answer explanation
Gravitational force is best described as a force that pulls objects toward each other, making this the correct choice among the options provided.
2.
FLASHCARD QUESTION
Front
What force do maglev trains reduce by using magnets?
Back
friction
Answer explanation
Maglev trains reduce the force of friction by using magnets to levitate the train above the track, eliminating the need for wheels touching the ground.
3.
FLASHCARD QUESTION
Front
Why does the soccer ball move when Jimmie kicks it toward the goal?
Back
The kick serves as a contact force on the ball.
Answer explanation
The kick serves as a contact force on the ball.
4.
FLASHCARD QUESTION
Front
The picture below shows Magnet 2 being pushed toward Magnet 1. Which of the following will most likely happen to Magnet 1 as Magnet 2 is moved closer?
Back
Magnet 1 will move away from Magnet 2.
Answer explanation
Magnet 1 will move away from Magnet 2 due to repelling magnetic forces between the two magnets.
5.
FLASHCARD QUESTION
Front
Static electricity happens when electrons pass from one object to another, such as from your hair to a comb as you comb your hair. If you were to comb your hair and then hold the comb near your hair, strands of hair would move forward and appear to stick to the comb. How could the interaction between the hair and the comb be described?
Back
They attract each other because they have opposite charges.
Answer explanation
The hair and comb attract each other because they have opposite charges, causing the strands of hair to move forward and stick to the comb.
6.
FLASHCARD QUESTION
Front
A person sitting in a rolling chair at rest throws a basketball forward. Since the person and the rolling chair have a greater mass than the basketball, how will the person and the rolling chair respond?
Back
They will move backward at a lower speed than the basketball moves forward.
Answer explanation
The person and rolling chair will move backward at a lower speed than the basketball moves forward due to conservation of momentum.
7.
FLASHCARD QUESTION
Front
Four students push on a block of wood with the forces shown in the diagram below. Assume friction is negligible. If the block slides horizontally, what is the net force, in Newtons (N), acting on the block of wood?
Back
11 N to the right
Answer explanation
The net force is calculated by adding all the forces together. In this case, 25 N to the left and 7 N to the right cancel out, leaving a net force of 18 N to the right.
Tags
NGSS.MS-PS2-2
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