Soil & Roots
What are three different ways water can move through soil?
What is a seed coat?
The outer layer or covering of a seed
What are the 3 types of soil?
What is the name of the horizontal line on a graph?
X-axis
What is the definition of a PORE
Small spaces or holes in something
How does absorption of water through soil affect living organisms in soil?
Absorption helps soil hold water so living organisms like plant roots, worms, and microorganisms have the moisture they need to survive.
Why is it beneficial to have a hard seed coat?
Protects the seed & prevents early germination
Describe CLAY
The soil ball stays together in a hard ball even under pressure and has the smallest particles.
What is the name of the vertical line on a graph?
Y-axis
What is the definition of COMPOSITION
What something is made up of
How does percolation of water in soil affect living organisms in the soil?
Percolation moves water downward through the soil, spreading water and nutrients to organisms at different soil levels.
Why is it harmful to have a hard seed coat?
Harder for water to get in & harder to germinate
Describe SAND
The soil ball falls apart as soon as it is touched and has the largest particles.
What do you call a line that shows the general trend of your data?
Line of best fit
What is the definition of PERCOLATION
The process by which water enters and moves down
What quality or characteristic of the soil samples could account for capillarity?
Soils with smaller particles and more tiny spaces have stronger capillarity because the water can “climb” through the tiny gaps more easily.
Why is it beneficial to have a soft seed coat?
Easier for water to get in & faster germination
Describe SILT
The soil ball crumbles into a fine powder when handled and has medium sized particles.
What should always be included on each axis besides a label?
What is the definition of CAPILLARITY
The movement of water upward through soil
How do soil and roots interact with each other? Use the terms dispersion and holding power in your answer.
Roots have greater holding power, which means they can hold the soil together. Because of this, root balls show less dispersion, while soil with no roots spreads more easily because nothing is holding it in place.
Why is it harmful to have a soft seed coat?
Less protection & premature germination
A shake jar is used by mixing soil and water in a clear jar, shaking it, and letting it settle so you can see the layers and learn what types of soil particles (sand, silt, and clay) are in the soil.
List 5 important things a graph needs when plotting a data point
Title, X-axis, Y-axis, plotted point, line of best fit
What is the definition of ABSORPTION
The process by which water enters and stays