Energy, Forces and Motion 2

A marine biologist observed the swimming speed of five different types of fish as shown in the chart below. What measurements did the marine biologist take to correctly calculate the speed of these fish?

• Time and density

• Volume and mass

• Distance and time

• Distance and density

Tags

NGSS.MS-PS3-1

Kareem set up the materials shown in the illustration below as part of an experiment involving friction. What two instruments will Kareem need to calculate the speed of the book as it slides down the ramp?

• Metric ruler and stopwatch

• Metric ruler and balance

• Balance and stopwatch

• Hand lens and metric ruler

Tags

NGSS.MS-PS3-1

Which animals have a constant speed that exceeds 40 miles per hour?

• cheetah, greyhound and ostrich

• cheetah, quarter racehorse and ostrich

• cheetah, quarter racehorse and greyhound

• cheetah, quarter racehorse, greyhound and ostrich

Tags

NGSS.MS-PS3-1

The graph below plots the distance in kilometers traveled by an object over time in hours. What can you conclude from this graph?

• The speed of the moving object increases over time.

• The speed of the moving object decreases over time.

• The speed of the moving object first increases and then decreases.

• The speed of the moving object remains constant.

Tags

NGSS.MS-PS3-1

The graph in #4 above, shows the distance traveled by an object over time (hours), in kilometers. How long in hours (h) would it take the moving object to travel 500 kilometers (km)?

• 1. 4 hours

• 1. 5 hours

• 1. 6 hours

• 1. 7 hours

Look closely at the graph below. What can you conclude about the motion of the object?

• The speed of the object is slowly increasing at a constant speed.

• The motion of the object is decreasing at a constant speed.

• The object is maintaining its direction of motion.

• The object is returning to its original position.

Tags

NGSS.MS-PS3-1

Kayla is creating a graph to show the average speed of a swimmer in a pool. She has labeled the x-axis of the graph "Time." Which label should Kayla use for the y-axis of her graph?

• Pool depth

• Swimmer age

• Distance swum

• Pool temperature

Refer to the distance-time graph. During which time interval is the object moving the fastest?

• From 0 to 6 seconds

• From 6-12 seconds

• From 12-20 seconds

• From 20-25 seconds

Tags

NGSS.MS-PS3-1

A student is planning a science fair experiment. Why should the student write a detailed procedure?

• It will ensure that the hypothesis will be proven correct.

• It will help the student change multiple variables at once.

• It will help someone else to change parts of the experiment that didn’t work and test a new hypothesis.

• It will help someone else repeat the experiment and collect similar data.

Tags

NGSS.MS-PS3-4

When conducting an experiment, a chemist added "a tiny bit of glucose and a sprinkle of calcium powder" to the reaction mixture. What is wrong with using this type of measurement?

• A bit and a sprinkle cannot be replicated by other experimenters.

• A bit and a sprinkle were too little of each chemical to be used in the reaction.

• A bit and a sprinkle were too much of each chemical to be used in the reaction.

• A bit and a sprinkle of these chemicals do not mix completely to get the desired results.