P4 Unit 22 Soil and Other Earth materials

P4 Unit 22 Soil and Other Earth materials

How do we classify soils?

There are many types of soils , we can classify to their texture, color and ability to retain water

Texture

• Soils is made up of three types of particles sand, silt and clay

• The texture of soil is depends on the amount of sand, salt and clay present in it

Multiple Choice

Which one of this texture options has the biggest size?

• clay

• silt

• sand

Color

• DIfferent types of soils have different colors, soils may be dark or light

• The color of a type soil depend on the types of mineral present in the soil and whether it is fertile or not

• Dark colored soil usually has a higher content of nutrient or dead plant or animal material, it is usually fertile

Fill in the Blank

Different color has different indicates, such as yellow or red soil contain mineral iron, white soil contain mineral ........, dark coloured soil usually contain higher of ............... or dead plant and animal material

Water Retention

• Soil water retention refers to the ability of a soil to hold on to water

• Let's do some experiment to compare sand , clay and

• 
  

Uses of soil

Soil is used in farming and is a habitat for many organisms.

We can also obtain raw materials from soil

• 1. Faming

• 2. Habitat of organisms

• 3. Raw materials

Farming, habitat of organisms and raw materials

• 1. Farming , soil is used in farming to grow crops for food

• 2. Soil is the habitat not only for plants but animals such as woodlice and snails, microorganisms such fungi

• 3. Soil is raw materials used to make glass, cement and pottery

Multiple Choice

these are 3 uses of soil, except...

• farming

• habitat for organisms

• control all parts of plants

• raw materials

Multiple Select

Some animals live in the soil as their habitat such as

• woodlice

• snails

• fungi

• mosquito

Growing plants in soil

• to grow well plants need:

• 1. water

• 2. minerals

• 3. air

• 4. anchorage to the ground

Multiple Choice

Plants grow well in soil because soil contains water, ...... , ............. and anchorge to the ground

• minerals,air

• mineral, wind

• air, blower

• air, metal

Types of soil for plant growth

• Different types of soil support the growth of a different kinds of plants

• 1. Garden soil: contain good mix of sand , silt and clay, it retains water well and has a good supply of oxygen , plants: hibiscus, rose

• 2. Sandy soil: made up of largely of sand particles, it doesn't retain water well, good oxygen supply, plants: coconut trees, palm trees, sea shrubs

• 3. Clayey soil: made up largely of clay particles, it's retain water well, low oxygen supply, plants : rice

Multiple Choice

Different type of soil support the growth of different kinds of plants, what is the suitable plant that can grow well in clay soil ?

• hibiscus

• rose

• rice

• coconut trees

Multiple Select

Garden soil contains a good mix of sand, silt, and clay, it retains .......... well and has a good supply of ................, so it's very fertile

• wind

• water

• soil

• oxygen

Fill in the Blank

Sandy soil is made up largely of sand particles, not all kinds of plant can grow well in sandy soil, but ................., palm trees, sea shurbs grow well in sandy soil

Enhancing plant growth

the characteristic of a type of soil can be changed to make it more suitable for plants to grow in

• 1. Increasing the amount of air in the soil

• 2. Increasing the amount of nutrients in the soil by natural fertilisers or chemical fertilisers

• 3. Changing the amount of water in the soil

• 
  

Multiple Choice

These are 3 ways to enchancing plant growth, except ...

• increasing the amount of air in the soil

• increasing sounds around soil

• increasing the amount of nutrient in thesoil

• changing the amount of water in the soil

Fill in the Blank

To increase the fertile of soil, we can add ..... , there are two types of it natural and chemical

Other earth materials

• Rocks such as granite and basalt

• Minerals such as gold, silver, diamond

• Metals such as iron ore

• Gases such as nitrogen, oxygen, and carbon dioxide

• Water such as lakes, rivers, ponds, seas and oceans

• Fossil fuels such as coal ,oil

Multiple Choice

other earth materials that we can find under soil one of them are minerals, these are the example of these minerals...

• granite, gold

• gold, silver

• silver, oxygen

• oxygen , coal