8.7B, 8.9A, & 6.12A Mastery Quiz

A soccer player kicks a ball, and the ball rolls across the field until friction and grass stop it. Which of Newton’s Laws explains why the ball eventually stops moving?

• 1st Law – Inertia

• 2nd Law – Acceleration

• 3rd Law – Action-Reaction

• None of Newton’s Laws apply

A roller coaster accelerates down a steep drop and passengers feel pushed into their seats. Which laws are demonstrated at once in this system?

• Only the 2nd Law

• Only the 3rd Law

• All three laws

• Only the 1st and 2nd Laws

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS3-5

A student pushes a wall with 100 N of force and does not move it. Which best explains the force interactions in this situation?

• The wall does not push back

• The student lacks inertia

• The wall pushes back with equal force (3rd Law)

• The student did not use enough force (2nd Law)

Which example BEST demonstrates all three of Newton’s Laws acting simultaneously?

• A rocket launching into space

• A leaf floating down from a tree

• A person standing still

• A light bulb turning on

A skateboarder pushes off the ground and begins to move forward. Match each Newton Law to part of this event:

• 1st: Stops when friction acts; 2nd: Mass affects acceleration; 3rd: Pushes ground, ground pushes back

• 1st: Pushes ground, ground pushes back; 2nd: Lights turn on; 3rd: Friction slows motion

• 1st: Friction acts; 2nd: Wall pushes; 3rd: Mass resists change

• 1st: Gravity disappears; 2nd: Friction is zero; 3rd: No reaction force

Tags

NGSS.MS-PS2-2

A star with high temperature but low brightness would most likely be:

• A red giant

• A main sequence star

• A white dwarf

• A protostar

Which two characteristics are plotted on the axes of the Hertzsprung-Russell diagram?

• Temperature and size

• Brightness and distance

• Brightness and temperature

• Color and mass

A massive star goes supernova. What can it become next?

• Planet

• Red giant

• Neutron star or black hole

• White dwarf

Which description best compares the life cycle of a sun-like star vs. a massive star?

• Both stars explode into supernovas

• Sun-like stars become black holes

• Only massive stars end as neutron stars or black holes

• Massive stars never leave the main sequence

A student is comparing two stars: Star X is very hot and very bright. Star Y is cooler and dim. According to the H-R diagram, where are these stars most likely located?

• Star X: upper left, Star Y: lower right

• Star X: lower right, Star Y: upper left

• Both in the center

• Both in the red giant section