Soil
Name 4 types of soil
Silt soil
Sand soil
Clay soil
Loam soil
______ is very valuable to our environment.
soil
Sedimentary
Metamorphic
Igenous
Rocks are made up of ____ or more minerals
2 or more.
What is humus?
Decayed plants and animals.
What is the best type of soil for growing plants?
Loam soil.
How long does it take for rock to change?
millions of years
Name the 5 properties of minerals.
Lustre, transparency, streak, hardness and colour.
What is decomposition?
The breakdown of something into different parts.
Soil is made up of...
rocks/minerals, air, water, organic matter and organisms
A minerals ______ is how much light shines through it.
Transparency
What causes erosion?
wind, water and ice break down and move rock.
What 4 things supports plant growth?
anchorage, oxygen, water and nutrients.
Name 4 things you can compost.
Any fruit/ vegetable.
Name 3 ways people use rocks
Many answers.
What is the softest mineral?
talc
What is drainage?
The process of removing water from soil.
Name all 4 additives in soil.
Pesticides
Herbicides
Fertilizer
Salt
What is sediment made of?
sand, shells, pebbles and other organic material.
What happens when lava cools slowly?