Calculate the density of each of your mineral samples. How could you use the
densities to identify the minerals?
Ans. Density can be measured with the structure of the minerals. Different minerals will have different density.
Would density or color be more useful in identifying a particular mineral?
Ans. A mineral's density is the amount of matter in a given space (mass/volume) and more specific way to compare the densities of minerals but colour is easily observed, but not always a reliable characteristic for the identification of minerals because different minerals may have the same color.
วันอังคารที่ 6 มิถุนายน พ.ศ. 2560
วันพฤหัสบดีที่ 25 พฤษภาคม พ.ศ. 2560
I will tell you examples about an impact of society on the environment. Population growth, technology, and transporting can cause global warming. Global warming makes animals, plants die. My second example is acid rain. Acid rain is rain that polluted from sulfur dioxide and nitrogen dioxide.It can make tree vulnerable to disease, extreme weather, and insects by destroying their leaves.My last example is greenhouse effect, when we use a vehicle like cars and when the engines run they release carbon dioxide and a lot of harmful gases, it increases the global temperature.
วันอังคารที่ 24 มกราคม พ.ศ. 2560
Cumulus - White and fluffy
Stratus - Flat and thin
Cirrus - Streak and looks like a feather.
This is my first year in Panyarat High School. I've learned a lot of things that are new and things that I never try before. Learning here is very fun because I have a lot of new friends. My favorite subjects are P.E. and science. I like P.E. because I like to play sports and I like science because I can do a lot of experiment. I like fish lab the most. I have an opportunity to join spelling bee contest, speech contest, and engineering challenge during academic week. I got the first place in spelling bee contest. This year I practice in World Scholar. I know a lot of new knowledge about science, history, and art. World Scholar makes me better at speaking English. Next year I hope I would be better at speaking English and better at debating.
วันจันทร์ที่ 9 มกราคม พ.ศ. 2560
1. Put the ramp against the seat of a chair. Place the ramp and chair so that the ramp points towards the hallway. Have your teammate on the other end of the hallway.
2. Place the ball bearing at the top of the ramp.
3. Lift the ramp 20 cm and release the ball bearing
4. Time how long it takes to travel 5 meters.
5. See how far it will go..
6. Repeat the experiment three times for each height then do 40 cm, 60 cm, and 80 cm.
Time to travel 5 meters
20 cm the ball go fastest and furthest
40 cm the ball go fast and far but not as 20 cm
vertical the ball go slowest and only 0.8 meter distance.
1. Describe how the ball rolls off the ramp at each height—discuss the effect of bouncing or other factors.
Ans. 20 cm. - The ball go in straight line.
40 cm. - The ball is tilted.
vertical - The ball bounce.
vertical - The ball bounce.
bouncing and tilt make the ball go slower.
2. Discuss what is the fastest speed reached and any factors that could improve this.
1.6 m/sec , make floor slope.
3. Does the ball travel in a straight line, why or why not?
No, because force in each side aren't equal.
วันพฤหัสบดีที่ 3 พฤศจิกายน พ.ศ. 2559
cause- cause of global warming is green house effect make the world hotter,ozone depletion make dangerous radiation can get through ozone layer,carbon dioxide from burning gasoline,methane emissions from animals.
effect- ice is melting,sea level rise became higher due to the melting of two big ice sheets in Antartica and Greenland,some animal have moved to higher and cooler area,precipitation has increased across the globe
cure- use solar energy for your house,buy better bulbs to make you use less energy,