Laws of thermodynamics

(e) Dalton’s Law Challenge Question: Ordinary air contains about 78% nitrogen, 21% oxygen, and small amounts of several other gases. As a diver descends, the pressure of the air he is breathing increases by about one atm for every 10 m of depth. Oxygen may become toxic and cause convulsions if it is breathed at a pressure above 1.4 atmospheres. According to Dalton’s Law, at what depth should a SCUBA diver be concerned about oxygen toxicity if he is breathing ordinary air? Discussion Points: •…

Last week in science class we worked on a lab called the Big Freeze. The objection of the project was to make a cooler and try to keep a block of ice frozen for 24 hours. For my cooler, I used a cardboard box, and put my ice container right in the middle of it and taped it down. Then I put bubble wrap on top of the ice container. After that I put a layer of aluminum foil on the bubble wrap and then put cotton balls and extra styrofoam on top of the foil. The last thing I did was put duct tape on…

i. children not expose to direct spray or tach cleaning product ii. must be keep in high locked cupboard iii. clearly labelling all the product with the sigh of danger product , the name, information about risk factors 24. Understanding your role in fire safety is an important factor in keeping children safe in Early Childhood Education and Care. Using the table below, explain in your own words the following aspects of basic home fire safety: Fire spread and speed Fire can spread very fast…

Kimberly Masi's presentation of Mechanical Engineering had to be the most interesting to me of all the speakers. It was so captivating that it made me think of doing some research on the major, yet I barely can picture myself doing a job like that in the future. Hearing about how she was a big part of projects at Disney World that we all have heard of, is just something that I really find amazing. O'Net's definition of Mechanical Engineering: perform engineering duties in planning and designing…

Laboratory Techniques and Measurements Tiffany Abbe Introduction: In this lab I will be adapting more about how to utilize distinctive estimation instruments and comprehend the diverse procedures included. Figuring out how to ascertain temperature and length. Will likewise make estimations utilizing the SI frameworks for fixation, thickness, and volume. While having the capacity to reate arrangements of building so as to change focuses and densities as tock arrangement. Materials and…

INTRODUCTION Thermoregulation is a complicated process requiring the sensing of surroundings condition and processing of that information so that animals can regulate their core temperature based on the change in environmental temperature (Seebacher & Franklin, 2005) to carry out metabolism and allow the functions of biologically sensitive enzymes and cells. Thus, allowing animals to survive in different environments including some extreme ones i.e. desert. Ectotherms such as lizards which have…

Logger Pro software and analyze the data collected using Excel. In order to achieve this Newton’s Law of Heating and Cooling was compared to the data collected by a thermometer attached to the Lab Pro. Theory: Thermometer’s measure temperature through thermal equilibrium. Heat is transferred from an object to the thermometer at a rate proportional to the temperature difference between the two. Newton’s Law says Where T is the thermometers temperature, To is the objects temperature, and ΔT/Δt…

1. The hypothalamus is the processing centre that controls the body temperature in the brain, through temperature receptors the skin is able to realize changes to external temperatures which send the information to the brain (hypothalamus). There are also temperature receptors that identify the temperature changes in the blood. The Processing centre triggers for the effectors (these are the sweat glands and muscles) to adapt in order the make sure our body temperature stays at 37°C. If we…

Order Disorder Drew Nevills Dr. Leo Oriet Engineering and the Profession November 7, 2014 Order Disorder The basis of life is founded on energy. Life without energy would mean life without movement, light, and also sound; in other words it would be impossible. Not a second goes by where energy is not present. When the sun is out, it emits light and heat, both forms of energy. When it is not out street lights are turned on using electricity, another form of energy. Stored energy can be…

It has been theorised that some animals help regulate their body temperature by heat loss through the use of a lot of different body parts. As this is true, there are many ways that allow animals have adapted to various new methods of absorbing and emitting heat. Animals living in their desert always have difficulties surviving with a hot climate. In these situations animals are able to use their body parts to their advantage. Mammals with a lot of fur have limited ability to emit heat. They…