Air and Wind
What gas in the air do humans need to breathe?
Oxygen
What causes water pollution?
Littering and pouring chemicals into water.
What are the three states of matter?
Solid, liquid, and gas.
What is soil made of?
Rock, minerals, water, air, and organic matter.
How do humans take air into their body?
Through the nose and mouth into the lungs.
What causes water to evaporate in the environment, and what is this water called once it has evaporated?
Heat from the sun makes it evaporate and it is then called water vapour
What are atoms?
Tiny particles that make up all matter.
What are the three types of soil particles?
Sand, silt, and clay.
How do plants help clean the air?
Plants take in carbon dioxide and give out oxygen.
What is condensation?
The process where water vapor cools and turns into liquid from a gas, forming clouds.
What does "repel" mean?
To push water away.
What is compost made from and what is the purpose of compost?
Compost is made from dead plants and natural materials. It is used as a fertilizer (it helps plants grow).
Name the two main gases found in air.
Nitrogen and oxygen.
What are the four main steps of the water cycle (in order)?
Evaporation, condensation, precipitation, collection.
What is buoyancy?
A force that helps objects float.
What is loamy soil and why is loamy soil good for growing plants?
Loamy soil is soil that has an almost equal amount of sand and silt and a bit of clay. It holds water and nutrients but also drains well.
What allows wind to turn into electricity? Explain the full process.
Moving air (wind) blows on the wind turbine blades to turn them and the generator creates energy.
How does the water cycle help keep fresh water moving through nature?
It moves water through stages that clean and recycle it continuously.
How do the atoms in a solid behave compared to a liquid?
The atoms in a solid are packed tightly together and do not move much. In a liquid they move more freely.
What are the three steps of soil erosion? Explain them
Detachment: soil particles are picked off the ground.
Transportation: soil particles are moved by water or wind.
Deposition: soil particles are put in a new location.