Y6 Sc Term 2 exam (Chap 11-12)

Which process leads to the formation of soil?

• Melting of rocks into magma

• Mixing of tiny rock pieces with air, water, and organic materials

• Freezing of water inside rocks

• Condensation of water vapour

What are organic materials in soil mainly made from?

• Minerals and salts

• Sand and clay

• Dead plants and animals

• Water and air

Which type of soil contains large amounts of sand and feels gritty?

• Clay soil

• Loam soil

• Sandy soil

• Silty soil

Which soil contains very fine particles, is sticky, and can hold a large amount of water?

• Silty soil

• Sandy soil

• Loam soil

• Clay soil

Which statement about silty soil is correct?

• It contains large sand particles and feels gritty

• It is not fertile and not suitable for growing crops

• It contains small rock particles, minerals, and humus

• It is found mainly in deserts

Which type of soil is the most fertile and ideal for farming?

• Sandy soil

• Loam soil

• Clay soil

• Silty soil

Why is loam soil easier to cultivate than other soils?

• It has no clay content

• It can be ploughed easily

• It dries quickly after rain

• It does not contain organic matter

Why is loam soil good for growing crops?

• It is dry and loose

• It holds water but also drains excess water

• It contains only sand 

• It has no organic matter

Why can only a few plants grow in sandy soil?

• It contains too much clay

• It cannot hold water

• It has too much humus

• It becomes sticky when wet

What happens to clay soil in hot seasons?

• It becomes loose and gritty

• It becomes stiff and cracked

• It turns into sand

• It holds more water