Water Cycle
In which step of the water cycle does the water return to Earth’s surface?
Precipitation
What is desertification?
Land desertification is usually in dry areas resulting from various factors including climatic variations and human activity.
Write one representation of the number 1other than 1,50/50,1/1, etc.
11000, 490, 24hours/1day, 365days/1year
What is water pollution?
Water pollution is the release of substances into bodies of water that makes water unsafe for human use and disrupts aquatic ecosystems.
What is the atomic structure of water?
H2O
What are the three states of water?
Solid, liquid, and gas
What are three causes of desertification?
Overgrazing, climate change, overpopulation, deforestation, urbanization, unsustainable agriculture
There is a bar graph that measures the volume of differs types of water tanks, which variable in independent and which variable is dependent? Which axis, x or y, will each variable be written on?
The different types of tanks is the independent variable and will be on the x-axis, while the volume is the dependent variable and will be on the y-axis
What are some water pollutants?
Sewage/wastewater, industrial waste, oil leaks and spills, agricultural waste, global warming, radioactive waste, plastics, etc.
What is the percentage of salt water on Earth?
97%
The process when the water is given off through the leaves as water is called _______.
Transpiration
What is desertification impact on Earth?
Desertification affects topsoil, group water reserves, surface runoff, humans, animals, and plant populations. The water scarcity in the dry lands limit the production of services in ecosystems that provide for our community.
Cup 1 consists of 10 tbsps of salt and 12 cups of water. Cup 2 consists of 4 tbsps of salt and 5 cups of water.
Which one is saltier and why?
10/12 can be simplified to 5/6. To compare 4/5 and 5/6, we can multiply 4/5 by 6/6 to get 24/30 and we can multiply 5/6 by 5/5 to get 25/30. 25/30 is larger than 24/30, so therefore Cup 1 is saltier.
True or False?
In drinking water, anything that is not water is not considered a “contaminant”
True.
Although not all contaminants pose as a health risk
True or False?
Only 3% of Earth’s fresh water is available for humans to use.
False
What are the five stages of the water cycle?
Evaporation, transpiration, condensation, precipitation and runoff
What are the consequences of desertification?
Loss of biodiversity by worsening living conditions of many species. Failure to grow crops and maintain livestock.
If a leaky faucet drips 10 mL of water per hour, how much will it drip in 5 years? (just show work, no need to find exact answer)
10 mL x 24 x 365 x 5 = 438,000 mL
Which element is a common pollutant in water and a cause of lung and skin cancer?
A. Arsenic
B. Bromine
C. Copper
A. Arsenic
True or False?
More fresh water is found in lakes and rivers than underground water.
False
Water that fills the cracks and spaces in underground soil and rock layers is called?
Groundwater
Which country does desertification affect the most?
Africa. It is the most affected by desertification
How many centuries are in 56 minutes? (just show work, no need to find the exact answer)
56 minutes x (1/60) x (1/24) x (1/365) x (1/100) = 0.0000010654
What is eutrophication (algae bloom)? What is it caused by?
Excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.
What are the 6 steps of design thinking?
Empathize, define, ideate, prototype, test, and sheare