2.4 Critical Juncture Review
Authored by Alyson Kerrigan
Science
8th Grade
NGSS covered
Used 59+ times
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About
This quiz focuses on forces and motion, specifically examining Newton's second law of motion and the relationship between force, mass, and acceleration. The content is appropriate for 8th grade middle school students studying physical science concepts. Students need to understand that force equals mass times acceleration (F=ma), which means that for objects with equal mass, greater changes in velocity indicate stronger forces, and for equal forces, less massive objects experience greater acceleration. The quiz requires students to analyze real-world scenarios involving sports equipment and vehicles, comparing how different masses respond to applied forces and determining which objects experienced the strongest forces based on their mass and velocity changes. Students must also demonstrate understanding of fundamental definitions including velocity as speed with direction and force as a push or pull that changes motion. Created by Alyson Kerrigan, a Science teacher in the US who teaches grade 8. This quiz serves as an excellent review tool for students studying forces and motion, providing multiple opportunities to apply Newton's second law in practical contexts. Teachers can use this assessment for formative evaluation to gauge student understanding before a unit test, as a warm-up activity to reinforce previous lessons, or as homework to help students practice analyzing force relationships independently. The variety of scenarios—from miniature golf to curling to space pods—engages students while reinforcing the same core physics principles across different contexts. This quiz aligns with NGSS standard MS-PS2-2, which requires students to plan investigations to provide evidence that the change in an object's motion depends on the sum of forces and the mass of the object, making it an ideal tool for measuring student progress toward this performance expectation.
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Student View
10 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Miniature golf is a game in which players hit a golf ball with a club. This causes the ball to roll along the flat ground. There were three golf balls rolling on the ground. The yellow golf ball has less mass than the blue and white balls, which have equal mass. Each ball was hit by a golf club, but not from the same direction. Use the information in the diagram to answer.
Which golf ball(s) experienced the strongest force? How do you know?
The blue golf ball; it has more mass and the fastest ending speed.
All three golf balls experienced the same force because they changed speed by the same amount.
The blue and white golf balls; they have more mass than the yellow golf ball, but changed speed by the same amount.
The white golf ball; it takes a stronger force to slow down a more massive object than to speed it up.
Tags
NGSS.MS-PS2-2
NGSS.MS-PS2-1
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Juno, Melissa, and Anna have skateboards that are the same mass. They were playing with their skateboards on a flat street when another skateboard came along and bumped their skateboards, but not from the same direction. Each skateboard changed speed as a result of being bumped. Use the information in the diagram to answer.
Which skateboard(s) experienced the strongest force when bumped? How do you know?
The green skateboard experienced the strongest force because it changed speed the most.
The green skateboard experienced the strongest force because it takes a stronger force to slow something down than it takes to speed something up.
The red and brown skateboards experienced the same strength force because they both gained forced, but the green skateboard lost force.
The red skateboard experienced the strongest force because it has the fastest ending speed.
Tags
NGSS.MS-PS2-2
NGSS.MS-PS2-1
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Curling is a sport in which players push large stones across smooth ice. Three curling stones were sliding across the ice. The yellow and purple curling stones are the same mass, and they are both more massive than the gray curling stone. A player pushed each curling stone, but not from the same direction. Use the information in the diagram to answer.
Which curling stone(s) experienced the strongest force? How do you know?
All three stones experienced the same force because they changed speed by the same amount.
The purple stone; it has more mass and the fastest ending speed.
The yellow stone; it takes a stronger force to slow down a more massive object than to speed it up.
The yellow and purple curling stones experienced the strongest force because they are both more massive than the gray stone and they changed speed by the same amount.
Tags
NGSS.MS-PS2-2
NGSS.MS-PS2-1
NGSS.MS-PS3-1
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Hockey is a sport in which athletes use hockey sticks to hit a puck across smooth ice. At practice one day, three hockey pucks (all with the same mass) were sliding across the ice. A player hit each puck with a hockey stick, but not from the same direction. Each puck changed speed as a result of being hit. Use the information in the diagram to answer.
Which hockey puck(s) experienced the strongest force when hit? How do you know?
The black puck because it takes a stronger force to slow something down than to speed it up.
All three hockey pucks experienced the same strength force because they changed speed by the same amount.
The green puck experienced the strongest force because it has the fastest ending speed.
The green and red pucks; they both gained the same force as they sped up, but the black puck lost force and slowed down.
Tags
NGSS.MS-PS2-2
NGSS.MS-PS2-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Velocity is.....
speed in a particular direction
how fast an object is moving
acting or going in the reverse direction
the energy that an object has because it is moving
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the same strength force is exerted on two objects of different masses, which object will experience GREATER change in velocity?
A LESS massive object
A MORE massive object.
Tags
NGSS.MS-PS2-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the same strength force is exerted on two objects of different masses, which object will experience LESS change in velocity?
A LESS massive object
A MORE massive object.
Tags
NGSS.MS-PS2-2
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