• Microwaves Radio Waves
    1,378 words
    Microwaves You might remember the heroic role that newly-invented radar played in the Second World War. People hailed it then as 'Our Miracle Ally'. But even in its earliest years, as it was helping win the war, radar proved to be more than an expert enemy locator. Radar technicians, doodling away in their idle moments, found that they could focus a radar beam on a marshmallow and toast it. They also popped popcorn with it. Such was the beginning of microwave cooking. The very same energy that ...
  • Transpiration Lab Water Plant Plants
    1,147 words
    Water is essential to plants in many ways. It first provides the major substance for living, to keep cells from shriveling up and dying. The second major function is to keep the plants rigidity. As plant cells become turgid, full of water, the cells expand, filling the extent of their cell walls, which are kept taught with turgor pressure. If the cells lose water, two problems occur. First, the cells dehydrate, causing the organism to die. Second, turgor pressure is lost as cells become flaccid...
  • Water Hydrogen Bond
    592 words
    water is the most important substance in our evolution and our daily lives. Without water, life as we know it would not have been possible. This essay will examine the water molecule in order to ascertain how it brought about Earth's thriving ecosystem and how important its to us today. Each water molecule consists of one oxygen atom and two hydrogen atoms. The oxygen atom (or the apex of the water molecule) bears a slight electronegative charge while hydrogen possesses a more positive one. Beca...
  • Microwaves Narrow Beam
    1,406 words
    You might remember the heroic role that newly-invented radar played in the Second World War. People hailed it then as 'Our Miracle Ally'. But even in its earliest years, as it was helping win the war, radar proved to be more than an expert enemy locator. Radar technicians, doodling away in their idle moments, found that they could focus a radar beam on a marshmallow and toast it. They also popped popcorn with it. Such was the beginning of microwave cooking. The very same energy that warned the ...
  • The Importance Of Water To Life On Earth
    979 words
    Water is the most important substance in our evolution and our daily lives. Without water, life as we know it would not have been possible. This essay will examine the water molecule in order to ascertain how it brought about Earth's thriving ecosystem and how important it is to us today. Each water molecule consists of one oxygen atom and two hydrogen atoms. The oxygen atom (or the apex of the water molecule) bears a slight electronegative charge while hydrogen possesses a more positive one 1 (...
  • Corer To Ensure A Fair Test To Make The Cut Mass Water Concentration
    1,031 words
    Background Information. I think that this practical will be based on osmosis because, Osmosis is the random movement of water molecules from a high concentration to a low concentration. This will then happen between the chips and the liquid in the McCarthy bottles. This already tells us that the chips will vary in size from the concentration of water. Plan of the Experiment. Method 1 Firstly we shall set up the experiments by getting the apparatus and the materials (potatoes) ready. We shall th...
  • Water Is Essential To Life
    819 words
    Water is Essential for Life Water is the most important substance in our evolution and our daily lives. Without water, life as we know it would not have been possible. It's important to understand and examine the water molecule in order to ascertain how it brought about Earth's thriving ecosystem and how important it is for us today. Water is a strong solvent, it's a very unique molecule that can breaks and reforms constantly. Each water molecule consists of one oxygen atom and two hydrogen atom...
  • Mass Spectrometer Water Ions Charged
    533 words
    Mass Spectrometer A mass spectrometer produces charged particles (ions) from the chemical substances that are to be analyzed. The mass spectrometer then uses electric and magnetic fields to measure the mass (weight) of the charged particles. There are many different kinds of mass spectrometers, but all use magnetic and / or electric fields to exert forces on the charged particles produced from the chemicals to be analyzed. A basic mass spectrometer consists of three parts: 1. A source in which ...
  • Potato Sample Results Solution Water
    2,340 words
    valuation Reflecting upon the criteria selected for purposes of this investigation, overall experiment was in agreement with the hypothesis. The set of results obtained demonstrated a clear correlation. Existing scientific logic can be applied to explain any discrepancies, which is included in the conclusion. The experiment was relatively straight forward to carry out, in the sense that the method I used was well thought out and coherent. No complex technical equipment was used either and so I w...
  • Amino Acid Atoms Bonds Hydrogen
    1,559 words
    Chapters 2 & 3 Study Guide (Chapter 2) Atoms: Consist of Protons (+), Neutrons, and Electrons (-) - Number of Protons = Number of Electrons - Protons + Neutrons = Mass Number - Number of Protons = Atomic Number Isotopes: Same number of protons but different number of neutrons - All isotopes of an element interact with other atoms in the same way Orbitals: - Can house 1 or at most 2 electrons - More electrons (higher the atomic number) = more orbitals - Shell Model: Simple but not quite accurate ...
  • Rates Of Transpiration Conditions Water Humidity
    318 words
    From the set of results I have discovered that the rate of transpiration is faster in windy conditions compared to humid conditions. In windy conditions the time taken for the bubble to move 100 mm was only 4 minutes when in humid conditions it took 13 minutes. In the control conditions it took 6 minutes. Transpiration is the loss of water vapour by diffusion through the stomata in the leaves. Several weather conditions affect the rate of transpiration including temperature, humidity, air movem...
  • Role Of Water In Living Organisms
    1,696 words
    Water is vital for life, with out water life on earth would cease to exist as every living organism must have water in order to survive. The total amount of water on Earth is fixed, (75% of the earth is covered in water) and most is recycled and re-used. The largest reservoirs are oceans and open seas. Very little is actually contained within living organisms, although water is a major constitute of most life forms. Water is a major component of cells, typically forming between 70 and 95% of th...
  • The Biological Importance Of Water
    1,064 words
    The Biological Importance Of Water";" The Biological importance of Water Generally, the main biological importance of water is that life cannot exist without it. In fact on a percentage basis, the majority of any organism is comprised of water. Additionally, it is believed that life first originated in the bodies of water on the earth. The importance of water is seen in such third world countries as Kenya. Where the inhabitants are forced to drink water so dirty and contaminated that they know i...
  • 2 Nd Law Of Thermodynamics Vs E 2
    258 words
    Second Law of Thermodynamics vs. Evolution According to the second law of thermodynamics, when energy is converted from one form to another, the amount of useful energy decreases. In relation to the theory of evolution, this law is not contradictory. The second law of thermodynamics is not relating to energy within living things because living things retain energy from the sun. The sun produces concentrated energy, which increases entropy. To maintain orderly structures, living things use this e...