Assessment ISA (PU 2.5) Light Dependent Resistors (Section 1) 1. Write down your hypothesis. Explain why you made this hypothesis. Hypothesis: When it is day there is more light hitting the LDR and so its resistance decreases and the light turns off. When it is night there is less light so the LDR has higher resistance and the light turns on. Explanation: When light shines on a Light Dependent Resistor‚ electrons are released and the current can get larger. So as the light intensity increases‚ more electrons
Premium Ohm's law Electric current Resistor
with other businesses rather than the end user. There are many different types of industry‚ but most of them can be placed into two categories Light and Heavy industry. These two industries are very similar in some respects and very different in other ways‚ however they both have a common purpose of producing and manufacturing goods. Opposite to light are heavy industries‚ which refer to large-scale industries. The industries that are categorised as heavy include manufactures of mass transport
Premium Industry
kvit01@gmail.com; Abstract This paper deals with the discussion of mass and energy in light. Light consist of very less amount of mass that it could not be measured. This paper is based on the concept that when the mass of light is increased it can move the objects. So‚ the light with increased mass can be used in many applications in practical life such as producing electricity. Increase of mass in light‚ leads to much more attraction in the academic sphere. It is necessary to take the broad
Premium Mass Energy Light
Change in respiratory rate during exercise Aim: To record and investigate how the breathing rate varies for the duration of light and heavy exercise. Introduction: When an individual exercises‚ the muscles being used needs extra energy from oxygen. The lungs pump oxygen to the heart‚ and then the heart pumps the oxygenated blood through the blood to the particular muscle that is working. The human body has a series of organs working together‚ which is named the respiration system. The organs involved
Premium Oxygen Heart Carbon dioxide
Lower education rates will raise recidivism rates because many prisoners who lack education and re-enter society will not be self-sufficient as education provides the basis for employment. Heather Ongley Lorena Quintero Amanda Winter Darren Robinson CJA/334 Philip Russo September 17‚ 2012 Introduction Before understanding the research to be conducted‚ one must understand the who‚ what‚ when‚ and why of the issue. Many people know and understand that with a better education they will
Premium Prison Higher education Recidivism
The Effect of Caffeine 1% and 2% on Daphnia magna’s Heart Rate Abstract: Ectothermic animals are animals whose body temperature is affected by their surroundings. This means that if the environment is cold the animal will be cold. If the environment is warm the animal will be warm. This is because the animal doesn’t have the capability of regulating its body systems to keep a constant body temperature. When an ectothermic animal is cold‚ its heart rate will lower. When
Premium Heart rate
As the birth rates in recent years have been declined rapidly‚ the social issues that associate with older people’s social care come in quick succession. It is important to find out the way in solving these severe problems instead of ignoring. Therefore‚ this essay would analyze the approaches that different countries used and obtain the most sustainable way in order to achieve the social balance. Before comparing the elderlies’ social care approaches in different countries‚ providing the backgrounds
Premium Old age Sociology Health care
9.5 Tests for halogens and halide Ions Test for halogen Test method Test observations Test chemistry and comments Chlorine gas Cl2 A pungent green gas. (i) Apply damp blue litmus. (Can use red litmus and just see bleaching effect.) (ii) A drop silver nitrate on the end of a glass rod into the gas. (i) litmus turns red and then is bleached white. (ii) White precipitate. (i) Non-metal‚ is acid in aqueous solution and a powerful oxidising agent (ii) It forms a small amount of chloride ion in water
Premium Chlorine Ammonia Sulfuric acid
condenser: light focusing lens Iris diaphragm: used to regulate the intensity of light entering the lens system of the microscope Mechanical stage: allows total movement of the slide by turning bot knobs beneath the left side of the stage‚ one for to-and-fro‚ one for the left and right positioning Resolution (resolving power): is the ability to distinguish two points as separate when they are close together Wavelength: the distance between similar points along a wave Compound light microscope:
Premium Microscope Optics Telescope
Determination of rate of photosynthesis INTRODUCTION Photosynthesis is the major process by which light from the sun is captured by plants‚ algae and some bacteria to produce energy. It is a process in which light energy is converted into chemical energy which is then stored in sugars. Photosynthesis occurs in two stages‚ light-dependant reactions and light-independent reactions. In light-dependent reactions the chlorophyll traps light energy which is then used to excite electrons and split water
Premium Photosynthesis Oxygen