Physical Setting - Science Worksheet (Page 23 of 28) in pdf

Physical Setting - Science Worksheet Page 23

74 Explain how the appearance of rock sample A indicates that the sample has spent very little time being

transported by the stream. [

]

75 Rock sample C has a diameter of 2 centimeters. Determine the minimum stream velocity needed to

transport rock sample C to its present location. [

]

76 The stream profile below shows the locations of rock samples A, B, and C in the streambed.

500

400

300

200

Lake

100

Distance (km)

2 km

Calculate the stream gradient between the locations of rock sample A and rock sample C. [

]

Base your answers to questions 77 through 80 on the map in your answer booklet and on your knowledge of

Earth science. The map shows the path of a tornado that moved through a portion of Nebraska on May 22, 2004

between 7:30 p.m. and 9:10 p.m. The path of the tornado along the ground is indicated by the shaded region.

The width of the shading indicates the width of destruction on the ground. Numbers on the tornado’s path

indicate the Fujita intensity at those locations. The Fujita Intensity Scale (F-Scale), in the left corner of the map,

provides information about wind speed and damage at various F-Scale intensities.

77 On the map in your answer booklet, place an X at a location where the tornado damage was greatest. [

]

78 State a possible wind speed of the tornado, in kilometers per hour (km/h), when it was moving through the

town of Bennet. [

]

79 Identify the weather instrument usually used to measure wind speed. [

]

80 Describe one safety precaution that should be taken if a tornado has been sighted approaching your home. [

]

[23]

[OVER]

P.S./E. Sci.–Aug. ’15

Physical Setting - Science Worksheet Page 23