What layer forms a thin shield that protects life on Earth from the sun’s ultraviolet rays?
Ozone layer
300
What is 28/100 as a percentage?
28%
300
A liquid changes to a gas phase through which phase change?
Evaporation
400
If mass stays the same, but volume increases, what happens to the density of a substance?
Density decreases (inverse relationship with volume)
400
How is a sedimentary rock formed?
Pressure only, no heat
400
Burning ______ generates carbon dioxide, which is a greenhouse gas that contributes to global warming.
Fossil fuels
400
On a coordinate plane with an X and a Y axis, which axis is vertical and which is horizontal?
X is horizontal, Y is vertical
400
What are the four types of precipitation?
Rain, sleet, snow, hail
500
What is a super saturated solution and how does it relate to relative humidity?
Super saturated solutions hold more "stuff" than a normal solution would (like our rock candy). We could add more sugar because we added heat and stirring. They are related to relative humidity since relative humidity is the amount of water in the air as a percentage. Rain happens when the air can't hold any more water.
500
What is the difference between erosion and weathering?
Erosion involves movement of particles, weathering is the breakdown of particles
500
Technologies that use alternative energy are good for the environment because they do not emit what?
Carbon dioxide
500
What percent of the pie have I eaten if I have eaten ⅗ of it?