Earth's Spheres
Properties of Water
A Molecule of Water
Composting
Earth's Spheres & Water Properties
100

This sphere includes gases, clouds and air.

What is the atmosphere?

100

Water sticking to other things.

What is adhesion?

100
There is only one atom of this in a molecule of water.

What is oxygen?

100

Banana peels, coffee grounds, and eggshells belong to this category.

What are greens?

100

This property of water allows water molecules to stick to each other, creating surface tension so that insects can walk across a pond.

What is cohesion?

200

The spheres interacting when a lion is drinking water.

What are: biosphere and hydrosphere?

200

Sugar dissolves into hot water due to this property.

What is universal solvent?

200

The bond formed when oxygen and hydrogen share electrons.

What is a covalent bond?

200

This category is important because it supplies Carbon and creates space for air to flow inside a pile.

What are browns?

200

When rain falls onto plants in the biosphere, this property allows it to stick to leaf surfaces so decomposers and plants don't dry out.

What is adhesion?

300

The sphere most directly impacted when oil spills into a lake.

What is the hydrosphere?

300

Surface tension can exist because of this property.

What is cohesion?

300

One side of a water molecule has a ____ charge because oxygen is on that side.

What is a negative charge?

300

Meat and dairy cannot be composted for this reason.

What is: smelling or attracting pests?

300

Water has this property (____), which lets it dissolve nutrients from the soil (a part of the ___sphere).

What is: universal solvent AND what is: geosphere?

400

Matter cycles through these spheres.

What are all (four) spheres?

400

This is the solvent when Jahmari stirs cocoa powder into his milk. 

What is milk?

400

This bond connects the hydrogen of one molecule to the oxygen of another moleule.

What is a hydrogen bond?

400

Jayla adds 2 oz of Greens to her pile. How many oz of Browns should she add?

What is 6 oz?

400

Rain falling from the clouds (part of the ___sphere) can absorb CO2, lowering its pH below 7 and making the rainwater slightly ______.

What is: the atmosphere and what is: acidic?

500

This sphere is NOT included in this statement: a volcano released ash into the air, killing many birds.

What is the hydrosphere?

500

Milk has a pH of 6.8, so it is ____.

What is acidic?

500

Water has this name because one side is positive and one side is negative.

What is polar?

500

Ms. Rosenstadt should use this method of composting because she lives indoors and does NOT want to touch worms.

What is bokashi bins?

500

Fungi and bacteria (part of ___sphere) rely on water's property of _______ to dissolve nutrients out of organic matter in compost piles. 

What is: biosphere and what is: universal solvent?

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