Science Study Guide By AKASH

What two elements are the main components of the Sun? How big (diameter) is the Sun? What temperature is the Sun?
Click the card to flip 👆
1 / 15
Terms in this set (15)
What two elements are the main components of the Sun? How big (diameter) is the Sun? What temperature is the Sun?
The two elements of the sun are hydrogen and helium.
The diameter of the sun is 860,000 miles
The sun's temperature is 27,000,000 °F.
What characteristics do Jupiter, Saturn, Uranus, and Neptune share?
These planets all share onE thing in common they are gas giants.
Explain why gravity keeps planets in orbit around the Sun.
Gravity keeps the planets in orbit because the planets want to float off in space but the gravity just pulls it back, now let's say the planets are magnets and the sun is a very strong magnet just pulling it.
4. Review the experiments we did on pendulums. What variables did we try to see if the # of swings in 15 seconds would change? What was the only variable that worked?
The variables we looked were the angle of the drop, the length of the string and the, and the different coins.
The length of the string and the angle of the drop.
You'll need to know what each of these are:
variable
independent variable
dependent variable
controlled variable
What is changed in an experiment that changes an outcome.
What you find out as the result of doing the experiment.
A really fair experiment where not to many things are changed at once
How does temperature affect the amount of water vapor in the air?
The colder the air the less water vapor it can hold and the hotter the air the more water vapor it can hold
Explain why the condensation forms?
Condensation forms when water vapor touches a cool icy surface.
How can you turn liquid water into water vapor faster (evaporate water faster)? Why do these things speed up evaporation?
To turn water to water vapor all you have to do is heat up the water,
This speeds up evaporation because when the water gets hot the molecule will bump into each other and break free into water molecules.
Uneven Heating. We did an experiment to see if soil or water (100 ml of each) would heat up and cool down faster. Review your notes to see what happened. Why did did the soil heat up so much faster than water? What variables affect the temperature change of a material?
The soil heated up faster because it was a darker color and the water has thing thing called heat sync. The variable that changes how something heats up is the temperature
Convection Currents. We also did an experiment on hot and cold water. Which one rises and which one sinks?
The hot water rises and the cold water sinks.
Explain how wind startsThe cool air at the bottom of the floor will be heated so it rises because it is less dense so the hot air that is now cold takes it's place and then it becomes a cycle.Review your notes on air pressure and atmospheric pressure. What is atmospheric pressure? What happens to atmospheric pressure?Atmospheric pressure is the pressure all around us but we can't feel it. It also presses on everything. When you go up in elevation the atmospheric pressure goes away because there is less and less air.Water Cycle You'll need to know the water cycle and the different locations water can go. What percentage of Earth is water and land?70% of Earth is water and 30% is land.What percentage of water is freshwater and saltwater?97% is saltwater and 3% is freshwaterWhere is the freshwater found on Earth?Freshwater is found in lakes, rivers, groundwater, and the atmosphere.