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6.6 Water Unit
Review for Unit Test
| Question | Answer |
|---|---|
| If testing several substances such as salt, grape juice, sand, oil, etc. in water seeing if they will dissolve, a good title would be... | What Substances can Dissolve in Water? |
| Water can dissolve many substances. Therefore, water is known as the _________________ ____________. | Universal Solvent |
| Ice, as solid water, is ____________ (less or more) dense than liquid water. | Less dense |
| Water is the ONLY compound on Earth that commonly exists as a _________, __________, and ______. | solid, liquid, gas |
| When drops of water stick to a wet leaf, what water property is this? | Adhesion |
| Ice floats on liquid water. What causes this to happen? | Density |
| Water sticks to itself, forming water droplets. What property of water allows this? | Cohesion |
| A bug can rest on top of water. What property is this? | Surface Tension |
| What happens when you increase thermal energy for a sample of water? | The temperature increases and water will change its state of matter. |
| To change ice to liquid water is energy added or subtracted? | added |
| To change water vapor (gas state) to ice is energy added or subtracted? | subtracted |
| To change liquid water to water vapor is energy added or subtracted? | added |
| Which two phase changes require water to absorb thermal energy: condensation, evaporation, melting, precipitation? | evaporation and melting |
| When water evaporates, molecules move __________ (faster or slower) because they _________. (heat up or cool down) | faster because they heat up |
| When water vapor cools and forms water droplets being the clouds. We call this.... | condensation |
| In summer, oceans ______________ heat. | Absorb |
| In winter, oceans _____________ heat. | Release |
| A Virginia city near the ocean in January will show slightly warmer average temperatures. Why? | The large body of water (ocean) is slowly releasing heat to make the air slightly warmer through winter. |
| Limestone is not a good choice as building material because it can be dissolved by ______________. | Water |
| Concrete is a good building material because is has less ___________ and ___________ weathering compared to limestone. | physical and chemical weathering |
| For water to cause damage to rocks, the process is...1) water ______ into the cracks, 2) ___________, 3) _______ the rock apart, then the pieces are ________ away by water. | 1) seeps into cracks, 2) freezes 3) breaks the rock 4) pieces are carried (washed) away |
| Beaches are easily washed away. The movement of the sand is a phenomenon called ________________. | erosion |
| Smooth rocks found in a creek or stream are rounded due to .... | physical weathering from the movement of water |
| Humans and other organisms consume fresh water which is only ____% of the water on Earth. | 1% |
| Technology in water treatment plants help to ___________ and ___________ large amounts of water. | filter and disinfect |
| Name three ways water is used in agriculture. | irrigation, aquaculture, hydrating livestock |
| What allows a water molecule to have so many unique properties? | It's structure. It is a polar molecule. |
Created by:
Johnsopd
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