Physical Properties of Soil

Soil consists of...

• solid, liquid and gas components

• solid components

• gas components

• liquid components

The solid components of soil include...

• water

• mineral matter & organic matter

• pores

• air

• particles

Soil pores are...

• medium for plants to anchor into the ground

• provide nutrients

• period of drought

• spaces in the soil filled with air & water

The Irish Soil Survey categorised soil particles into five different sizes. Which is the largest?

• Gravel

• Coarse Sand

• Silt

• Clay

The Irish Soil Survey categorises the soil particles into five different sizes. Which is the smallest?

• Clay

• Silt

• Fine Sand

• Gravel

Silt & Clay have...

• large soil particles

• small soil particles

• large pore spaces

• well aerated soil

Clay is a source of

• Ca

• Fe

• K, P, Ca & Mg

• Mg

Soil is made up of what % of air?

• 50

• 45

• 5

• 25

Soil is made up of what % of mineral matter?

• 5

• 25

• 45

• 50

Soil is made up of what % of Organic Matter?

• 5

• 25

• 45

• 50