Purpose: Find crystallization temperatures for 7 concentrations of KNO3 and make a solubility graph Materials: KNO3, test tube, stir rod, weigh boats, hot plates, thermometer, 10 mL graduated cylinder. Procedure: -In two test tubes, put exactly 5 mL water in each -Put assigned amount KNO3 in each -Heat in hot water bath until dissolved- you…
Purpose: Find silver produced and compare to predicted. Cu + 2AgNo3 → Cu(NO3)2 + 2Ag Procedure: -in small beaker (100-250 mL), weigh beaker -Add 3.00 OR LESS of AgNo3, weigh AgNo3 -Weigh copper penny -Add 80 mL H2O -Heat and dissolve (warm, not boil) -Put copper penny into AgNo3(aq) –observe -Allow to sit overnight…
Description Barn owls live in many parts of the world. Their upper body is covered in grey feathers, dark, ribbon lines and pale spots. An owl’s lower body consists of white with several black marks, just like a Dalmatian! Their faces are heart-shaped and white with brown edges. The eyes of a barn owl are…
A horse travels at four gaits: the walk, trot, canter, and gallop. The average horse’s walk speed is 6.4 km/h. At the walk, the horse moves in a four-beat succession in the order shown, right. There is always one foot raised and three on the ground. The walk is the slowest of the horse’s gaits…
Electric Charge Charges that are the same repel each other. Charges that are different attract each other. This rule is the same rule for interactions between magnetic poles. Protons repel protons and attract electrons because they have different types of electric charges. Protons have a +ve charge and electrons have a -ve charge. This interaction…
The Cobra’s venom consists mainly of neutroxins, however it also contains a variety of cardiotoxic and other compounds. They have enough venom to kill a large adult elephant; however, they are not evolutionally predestined to bite humans, because they know that humans are not a food source for them. They will only attack when threatened.…
Aim of Study The aim of this study is to measure downstream changes in the hydraulic geometry and assess its influence on the changes in fluvial hydraulics in the lower reaches of the Morant River in St. Thomas, and further to show these influence depositional landforms. Null Hypothesis The changes in Hydraulic Geometry do not…
What is the scientific method? It is a logical, systematic approach to solve a problem. What is always the first step of the scientific method? Identify the problem and make observation. What makes a good hypothesis? A good hypothesis is one that you can test. What is a control? Comparison with one or more experimental…
Three examples of fossil fuels could be a. Coal b. Oil c, Natural Gas The fossil fuel that is most abundant and least expensive is Coal The plant material that dies in swampy areas and does not decay eventually forms a dense material called what? Peat What conditions are necessary in swamps or bogs to…
Numerology Numerology is any study of the purported divine, mystical or other special relationship between a number and some coinciding observed (or perceived) events. Numbers have always been important, but viewing the history of many ages many civilization have given some numbers importance on others on the basis of their significance on that particular civilization.…
Nutrition is the science behind how your body uses the components of food to grow, maintain and repair itself. Your body needs more than 50 nutrients on a daily basis in order to function properly. The fifty nutrients belong to one of six general categories. *Carbohydrates *Proteins *Vitamins *Fats *Minerals *Water With the exception of…
Why do we need sleep? sleep takes up almost 1/3 of our lives when deprived of it, we feel terrible and our performance suffers researchers, however, are not sure exactly why we need sleep – just that we do What are the effects of lack of sleep? Major effects fatigue diminished immunity to disease slight…
Defining Characteristics of the Plant Kingdom: Multicellular Terrestrial Embryophytes Photosynthetic (almost all) Eukaryotic 4 Major Groups 1. Non-Vascular Plants (Bryophytes and Friends) No vascular tissue – therefore must rely on surrounding moisture and osmosis to move fluids through their bodies. Small in stature, and simplistic – NO organs (roots, leaves, stems) (Rhizoids = root-like structures…
What is Ozone?-Ozone is a gas made up of three oxygen atoms (O3). It occurs naturally in small (trace) amounts in the upper atmosphere (the stratosphere). O + O3 → 2 O2 Chlorofluorocarbons and ozone Many people have heard that chemicals called CFCs, short for chlorofluorocarbons, cause the ozone hole. CFCs escape into the atmosphere…
Plants Theory (recent): Given by University research team Global cooling was caused by reduction of carbon in the atmosphere due to the first appearance of plants (photosynthesis) Less greenhouse gas (carbon) to prevent escape of infrared radiation which leads to cooler temperatures (less heat trapped) Plants (ex. moss) extract calcium, magnesium, phosphorus and iron which…
The volcanic ash cloud created by a volcanic blast can change interactions between the atmosphere and sun, affecting climate patterns. When a volcano erupts, the main things that come out of it are sulfur dioxide, water vapor, dust, and ash that go into the atmosphere. The eruption of a volcano can cause a cooling or…
What is tundra? World’s coldest and driest biomes Located at latitudes 55° to 70° North( circumnavigating the North pole) 3 types of tundra: Arctic tundra, alpine tundra, and Antarctic tundra vast and treeless land which covers about 20% of the Earth’s surface cold, and the land is pretty stark low growing plants like mosses, heaths,…
La Nina Pacific temperature cooler than normal Last 9-12 months The Pacific Ocean drops 3-5 degrees Reoccurs every 3-7 years Cause by a decrease in ocean temp and increase in trade wind strength The westward wind gets stronger Allowing low cooler water to surface toward South America Cloud build up in Southeast Asia The wet…
The process of the ocean water on Earth circulating due to heat and salinity. Thermo stands for heat, haline stands for salt. The less dense warm water flows over the more dense cool water This current is vulnerable to rising temperatures The salinity of the ocean water is decreasing near the poles due to the…
The IPCC is known as the Intergovernmental Panel on Climate Change and was established in 1988 by the UNEP (United Nations Environment Programme) and the WMO (World Meteorological Organization). It is one of the leading panels on the assessment of climate change. They provide scientific assessments about the risk of climate change. ROLES OF IPCC:…