Avalanches

Avalanches

4th Grade

15 Qs

quiz-placeholder

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Avalanches

Avalanches

Assessment

Quiz

Science

4th Grade

Hard

NGSS
MS-ESS3-2, MS-PS3-1

Standards-aligned

Created by

Lisa Thompson

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Loose Avalanche

has a low moisture, snow slab has a thinner, weaker failure layer beneath it

is also called "ground avalanche", happens because of rain, water percolation or water lubrication,

it forms near the surface, has a triangular pattern on descent, are triggered by a local loss of cohesion because of sun or rain

the flowing of snow is similar to the flowing of mud with high water content, typical of Northern Norway and Alaska

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which is NOT true?

moisture content is low, density is near 100 kg/m3 or less, snow temperatures are less than 0 °C and snow depth is more than 1 m

After the snow avalanche starts, a dust cloud which contains snow and air forms.

dry avalanches have a dense core of snow at the bottom of the moving mass

Powder avalanches often form by falling ice (or sometimes by ice avalanches) from steep icefalls, have less density than dry avalanches, their destructive power is more.

Tags

NGSS.MS-ESS3-2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Avalanches are always caused by an external stress on the snow pack

True

False

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Wet Slab Snow Avalanche

has a low moisture, snow slab has a thinner, weaker failure layer beneath it

is also called "ground avalanche", happens because of rain, water percolation or water lubrication,

it forms near the surface, has a triangular pattern on descent, are triggered by a local loss of cohesion because of sun or rain

the flowing of snow is similar to the flowing of mud with high water content, typical of Northern Norway and Alaska

Tags

NGSS.MS-ESS3-2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Slopes flatter than 28 degrees or steeper than 55 degrees typically have a lower incidence of avalanche occurrence

True

False

Tags

NGSS.MS-ESS3-2

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

slopes with windward and sunny exposure have a lower incidence of avalanche hazard.

True

False

Tags

NGSS.MS-ESS3-2

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Avalanches may appear on the same place few times per year or once in a few centuries

True

Flase

Tags

NGSS.MS-ESS3-2

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