Cycles and Spheres (made by Estelle)

What is a system?

• A group of interacting parts, including energy and matter, with a common purpose

• f⁵

• A group of interacting parts that help each other to achieve different purposes

• A group of purposes with no interacting parts

Is the ocean a open, closed, or isolated system?

• Open

• Closed

• Isolated

• Scary

What type of systems are most systems on Earth and why?

• Open because energy and mass are exchanged between them.

• Open because only energy is exchanged between them.

• Isolated because energy and mass are exchanged between them.

• Closed because neither energy or mass are exchanged between them.

What is the driving force of the hydrological cycle?

• The sun

• The moon

• Me

• Gravity

Which sphere of the earth has to do with plants?

• Lithosphere

• Geosphere

• Hydrosphere

• Biosphere

How does atmospheric nitrogen turn into ammonia?

• Nitrogen-fixing bacteria convert atmospheric nitrogen into ammonia.

• Humans and animals breathe it in, then breathe it out onto the plants. Then the plants take it in, turn it into ammonia, and put it in the soil.

• Birds eat it, and when they excrete, ammonia is released into the air.

• Viruses convert it into ammonia.

What is porosity?

• The amount of water that can go through a material.

• The measure of how much of a material is open space. (How much space is between the particles of a material)

• The volume of a material.

True or False: When water evaporates, it loses thermal energy.

• True

• False

How does the chemical composition of air change as your altitude changes?

• There is more oxygen the higher you go up.

• There's more nitrogen the higher you go up.

• It doesn't change.

• The water vapor in the air gets hotter as you go up.

What is permeability?

• The open space in a material.

• How easily water can flow through a material.

• How hard a material is.

• How much water falls from the sky.