DOL: October 31st

Which of the following is the best description of an experimental investigation that tests the effect of force on an object?

• Observing how quickly a flower grows in different amounts of sunlight

• Measuring how the angle of a ramp affects the speed of a toy car

• Recording the sound level of different musical instruments

• Watching how a plant grows in different soil types

Tags

NGSS.MS-PS2-2

You want to design an experiment to test the effect of air in a balloon rocket. Which variable would you most likely change in the experiment?

• • The length of the string the balloon travels on

• The amount of air inside the balloon

• • The color of the balloon

• • The shape of the balloon

Tags

NGSS.MS-PS2-2

A student wants to test how different surfaces affect the speed of a toy car moving down a ramp. What part of the investigation does the surface type represent?

• Independent variable

• Dependent variable

• Constant

• Hypothesis

Tags

NGSS.MS-PS2-2

In an experiment with a car on a ramp, what is the best way to measure the effect of force on the car's speed?

• Measure the time it takes for the car to reach the bottom of the ramp

• Record the color of the car as it moves

• Observe the car’s position before and after each run

• Measure the temperature of the ramp

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Imagine you are testing how the mass of an object effects the speed it takes to reach the ground. How would you set up this experiment, and what steps would you take to measure how force affects the balloon's motion? Describe the materials, variables, and method for recording your observations.

Tags

NGSS.MS-PS2-2