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Final exam 3 chapters

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What is physics   It is the study of how matter and energy react  
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What is a phenomenah   It is all the information that we gather with our senses  
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What is physics described as   The science so stigating phenomenahs  
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What are the 4 things which can be measured   Length,mass time and temperature  
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What is a common unit used by scientists   Th SI unit  
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What is measurement   Comparison of a known and and an unknown constant  
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Length Mass Time Temperature Current Can all be measured by   Meters,centimeters Kilograms,grams Hours,minutes,seconds *C,*F,K Ampheres  
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What is mass   The quantity of matter possessed by a body  
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What is the principle of the pendulum   A pendulum is the simplest device which is used to study the principle of periodic motion when a pendulum takes a certain amount of time to complete one oscillation is called the time period of the pendulum  
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What does the density of a substance tell us   It tells us wether the substance is light or heavy  
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What does the accuracy of measurement depend on   It depend on the accuracy of the instrument,how we'll we use the instrument,care in setting the device  
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What is temperature   It is the degree of hotness or coldness of a body  
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There are two fixed points   Meting point of ice or freezing point of water Boiling point of water or steaming point of vapor  
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What is the absolute zero   *273 C  
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Clinical thermometer It is used by doctors It contains mercury in a narrow glass called capillary so that it is easily pulled up in the tube with capillary action with the slightest of heat The thermometer is marked for 35-43 degrees C   Laboratory thermometers are used in the labs Mercury is used in thin wall capillary It is marked from 10-110*C There are three scales Celsius,Fahrenheit ,kelvin  
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Characteristics of mass   Mass is the quantity of matter contained in a body Mass can never be zero for then it has no existence mass remains the same any place you go mass has no dependency on direction  
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Characteristics of weight   Weight is the force by which the body is pulled towards the centre of the earth. Weight can be zero.weight can differ from place to place,weight has dependency on direction  
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What are stars   Stars are huge balls of gasses that give out light  
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Planets   Are made up of rocks or gas and do not give out light And move around sun in fixed orbits  
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Dwarf planets   Which orbit around the sun and are smaller than most planets  
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Moon   Is made of rock and is only object beyond earth which man has set foot on  
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Comet   Is made of ice and dust orbiting the the sun  
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Meteor enters the earths atmosphere and burns up   Meteorite rock survives and reaches the ground  
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When earth spins on it own axis it causes day and night this is called   Rotation  
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All stars like our sun is born out of a cloud of gas and dust called the   Nebula  
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When h2 is used up it will become the   Red giant  
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After the white dwarf cools Down it will become a   Black dwarf  
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Any star bigger than the Sun is called a   Massive star  
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When a massive star bursts it turns into a ------------ that will explode to form a -------------- and then a ---------------   Red giant,supernova,blackhole  
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Between Mars and Jupiter there is the   Asteroid belt  
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