Tek Science

A push or a pull

• magnetism

• speed

• force

• friction

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A force of attraction to objects with steel or iron

• friction

• force

• magnetism

• gravity

Tags

NGSS.MS-PS2-5

Force that pulls things toward the Earth

• gravity

• force

• friction

• magnetism

Tags

NGSS.MS-PS2-4

A force that happens when rubbing objects together

• magnetism

• force

• gravity

• friction

A student designs an experiment to test the force of a spring using a spring launcher and four spheres with the same diameter but with different masses. What other piece of equipment would be most useful for this experiment? (5.6D)

• A graduated cylinder to measure the volume of each sphere before the sphere is launched

• A beaker to collect the spheres after they are launched

• A stopwatch to measure how long it takes to load each sphere on the spring

• A meterstick to measure the height each sphere reaches after the sphere is launched

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Students design an experiment to determine how much force is needed to move blocks of wood of different masses slowly across a lab table. Which procedure should students include in their design? (5.6D)

• Conduct five trials, using a different scale to pull each block of wood

• Conduct five trials, pulling a different side of each block each time

• Conduct five trials, using a different table for each trial

• Conduct five trials, pulling each block of wood in the same way for each trial

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Robert built a ramp to determine the average distance his toy car will travel when released down the ramp. Which experiment will best test HOW FAR his toy car will travel when released down the ramp?

• one that measures the distances that DIFFERENT toy cars travel in MANY trials
• one that measures the distances that DIFFERENT toy cars travel in TWO trials
• One that measures the distances that HIS toy car travels in MANY trials
• One that measures the distances that HIS toy car travels in TWO trials

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

The Cool Kids table designed a tabletop bumper car model to test the effects of  different forces. They used several of the same toy cars to represent the bumper cars and a cardboard box to represent the bumper car arena. They used a rubber mat, a plastic folder, and paper towel to LINE THE BOTTOM OF THE BOX.  Which question is this investigation most likely designed to answer?

• How does the AMOUNT of force affect how many bumper cars will GET HIT?
• How does the SIZE of the car affect how much force is needed to MOVE IT?
• How does the MATERIAL on the bottom of the box affect how FAR the cars will MOVE?
• How does the AMOUNT of force affect how long the cars will CONTINUE TO MOVE?

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Abby wants to see how high a tennis ball will bounce when she drops it from a height of 10ft. When her teacher gives her permission, Abby climbs a ladder to perform the experiment. Which experiment best tests HOW HIGH the tennis ball will bounce when released from 10ft?

• drops many DIFFERENT tennis balls from 10FT, ALL at the SAME time, and records which ball bounces the LOWEST.
• drops many IDENTICAL tennis balls from 10 FT, ALL at the SAME time, and records which ball bounces the HIGHEST.
• drops many IDENTICAL tennis balls from 10FT, ONE at a time, and records HOW HIGH EACH ball bounces.
• drops MANY different tennis balls from 10FT, ONE at a time, and records HOW HIGH EACH ball bounces.

Tags

NGSS.MS-PS2-2

Which experiment listed below will best determine how friction affects the speed of a rolling object?

• Roll 3 objects of various sizes across the floor.
• Roll 3 objects of equal size from various heights across the floor.
• Roll 3 objects of equal size across 3 different types of surfaces.
• Roll 3 objects of equal size from equal heights across the floor.

Tags

NGSS.MS-PS3-1