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Forest

Sequencing

College

Science

HYDRUS Quiz #2

Afrah Al shuka

3

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Question 1

Multiple Choice

What is a soil water retention curve?

A graph showing the relationship between soil moisture content and soil temperature
A graph showing the relationship between soil moisture content and soil water potential
A graph showing the relationship between soil moisture content and soil pH
A graph showing the relationship between soil moisture content and soil texture

Question 2

Multiple Choice

Which factor does NOT affect soil porosity?

Soil texture
Soil structure
Soil color
Organic matter content

Question 3

Multiple Choice

What is the primary role of soil porosity?

To determine soil color
To affect the soil's nutrient content
To determine the soil's ability to hold water and air
To measure soil temperature

Question 4

Multiple Choice

How does soil texture influence water retention?

Sandy soils retain more water due to larger particles
Clay soils retain more water due to smaller particles
Silts retain less water than sands
Texture does not influence water retention

Question 5

Multiple Choice

What happens to soil porosity as compaction increases?

Porosity increases
Porosity decreases
Porosity remains the same
Porosity becomes unpredictable

Question 6

Multiple Choice

Why is the soil water retention curve important for agriculture?

It helps predict soil color changes
It assists in understanding water availability for crops
It identifies soil erosion patterns
It measures soil temperature variations

Question 7

Multiple Choice

Which soil type typically has the highest porosity?

Sandy soil
Clay soil
Loamy soil
Gravel soil

Question 8

Multiple Choice

What is the effect of organic matter on soil porosity?

It decreases soil porosity
It has no effect on soil porosity
It increases soil porosity
It makes soil porosity unpredictable

Question 9

Multiple Choice

Which instrument is typically used to measure the soil water retention curve?

Thermometer
Tensiometer
Barometer
Hygrometer

Question 10

Multiple Choice

What is the relationship between soil porosity and permeability?

Higher porosity always means higher permeability
Higher porosity never affects permeability
Higher porosity can lead to higher permeability, but other factors play a role
Porosity and permeability are unrelated

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