Welcome to future scientists
Last time, we learned about cam lens imaging patterns
Remember
Today, dr. Corleone brought a new experiment
Let's measure the density of salt water and small stones
Emerald stones, gold and silver medals..
Are these valuables “real”
It's often when everyone cares. Topic
Dr. Cortez brought density measurements today
Click to watch the bottom video
Measuring the density of salt water and small stones
Motion: old =m/v
Experimental equipment: tray scales, code, measuring cylinders, tatters
Experimental supplies: line, small stones, salt water, water
Experimental steps
(1) align pallet scales to measure the total mass of salt water and cupsm1
(2) number of reading cylinders in which partial salt water is poured
(3) measurement of the total mass of remaining salt water and cupsm2
(4) quality of salt water in tubes m equals m1-m2 and salinity density is calculated according to the density formula
(5) quality of small stonesm, using drainage to measure the size of small stones
Experimental findings
By the old density formula = m/v, the density of the object can be calculated if the size and mass of the object are known. The methods used to measure density are also the weight cup method, the akimid law, the floating method, and the density measure. We can judge by density whether a material is empty or solid, which is an important basis for identifying the density of unknown material。
Dr. Corleone's final reminder
With professional guidance
Use regular instruments to test it
That's all for now
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