Formative Assignment Including PSAfor class IX PHYSICS 1. Motion is relative or absolute? Give reason. 2. Name the physical quantity that essentially changes as a body moves. 3. Is displacement or distance independent of path? How? 4. Give example of a motion in which distance is covered but there is no displacement. 5. Give one example of motion where‚ distance and displacement are same. 6. When moving car returns to the same point what will be the ratio of
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Susan Harrison Aims: 1. To make simple measurements of body parameters 2. To assess whether they fall in the normal range Introduction In this practical you are going to measure your height (cm) and weight (Kg)‚ % skinfold fat‚ pulse rate (b/min) and blood pressure (mmHg). Put values on Excel sheet provided. 1. Size Equipment: Stadiometer; weighing scales. Measure your height (without shoes) in centimetres (cm) and weight in kilogrammes (Kg). Compare your weight with reference
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Description To investigate the effect on caffeine on heart rate of water fleas and to understand the risk of high level consumption of caffeine to the health of the human circulatory system and nervous system. Preview Diagram 1: Chemical structure of caffeine Image source: http://ismaastricht.wikispaces.com/file/list The images above show the chemical structure of caffeine which has a chemical formula of C8H10N4O2. Caffeine was named by the International Union of Pure and Applied Chemistry
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the following on heart rate: vagal stimulation‚ cold‚ heat‚ pilocarpine‚ atropine‚ epinephrine‚ digitalis‚ and potassium‚ sodium‚ and calcium ions. 6. To define vagal escape and discuss its value. 7. To define ectopic pacemaker. I nvestigation of human cardiovascular physiology is very interesting‚ but many areas obviously do not lend themselves to experimentation. It would be tantamount to murder to inject a human subject with various drugs to observe their effects on heart activity or to expose
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Discussion Heart Rate Our hypothesis stated 1.) The heart rate increases substantially when a person performs a physical activity and 2.) Females have heart rates greater than males’. In this experiment we measured the resting heart rates and exercise heart rates of both the male and females that are in the class. We calculated the results that were taken by each member of each group in the class (6 males and 16 females total). The average resting heart rate for women was 71.8 beats per minute
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effect on the heart rate of daphnia. Daphnia are water fleas that have a sort of heart that we can see in magnification. We can count the number of heart beats in a minute of a regular daphnia and try and get a new one with the same specifications as the old one that may have died. It is also a good idea to get a new one as we want to see how much it affects it from ordinary instead of adding the caffeine one after another. We have to be careful not to feed too much caffeine to the daphnia only a maximum
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customers’ needs anymore. So‚ our company has designed a brand new promotional gift. It can best suit our clients’ needs and lifestyles. This is – a heart rate watch. First of all‚ if you look at this paper‚ you can see that this watch has a function that has never been designed for before – a heart rate monitor. It enables the users to measure their heart rate while doing exercises. Actually‚ the underlying purpose of this design is to immerse into customers’ daily lives. Let’s imagine that‚ when you
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Time Period: Enlightenment: 18th century France and England A.K.A. the age of reason climate of inquiry Lessening Control of the Church The Protestant Reformation- Martin Luther The Printing Press Scientific Developments The New World (America!) Philosophies of the Time Rationalism: Rene Descartes (math)- humans‚ by reason alone‚ can discover universal truths Sir Isaac Newton- Mechanical science. All truth found in nature‚ rejection of supernatural religion. Emphasis is placed on
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Caffeine on Daphnia Heart Rate: Aim: To investigate the effect of caffeine on the heart rate in Daphnia. Hypothesis: My hypothesis is that as the caffeine content increases‚ the heart rate if the Daphnia increases. Equipment: * Culture of water flea – Daphnia * Caffeine of 5 different concentrations * Microscope * Counter * Cavity Slide * Pipettes * Stop clock * Distilled water * Test tubes * Petri dish Method: 1. Remove one Daphnia and place
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hemp. The hypotheses stated that both drug were depressant drugs thus meaning that heart rate‚ and along with it‚ metabolism. The hypotheses are‚ in fact‚ true statements that can be backed with the data collected. The initial heart rate before the drug‚ hemp was applied‚ was 216 BPM. The final heart rate‚ with the drug was 132 BPM. That is a change by -84 BPM. This proves that hemp lowered the heart rate of the Daphnia‚ like the hypothesis stated. The overall average for all the groups‚ there is a
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