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.
Help!
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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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