Laboratory work

Содержание и основные понятия

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Alterna · physics · 0.L
Laboratory work
Laboratory work #1 and #2: division price, size of small bodies.
Physics begins not with formulas, but with measurements. In virtual lab work, you learn to determine the cost of dividing the instrument and measure the size of small bodies in rows.
GEF · Grade 7
PIF · laboratory
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Laboratory work #1
Determination of the measurement instrument division price
Objective of the work
Learn to determine the price of dividing the scale of the measuring instrument (lines, mensures, thermometer).
Devices
A line with millimeters of divisions, a menzurka, a thermometer.
Proceedings
Look at the scale of the instrument.
Write down the values: U
max
and U
min
.
Count the number of n divisions between them.
Calculate the division price: C = (U)
max
− U
min
) / n.
Determine error: Δ = C / 2.
Measure the length of the object. Write the result: L = value ± Δ.
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Virtual menzurka
Set the price of dividing and water volume
U
max
U
min
Number of divisions n
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Laboratory work #2
Definition of small body sizes by row
Objective of the work
Learn how to measure the size of small bodies (greens, peas) in rows.
Devices
Linear, peas (or wheat grain, beads).
Proceedings
Put 20-30 peas in one dense row along the line.
Measure the length of the row L.
Count the number of N peas.
Calculate the diameter of one peas: d = L / N.
Repeat three times, find the middle.
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Virtual row mode
Measure the diameter of the peas
Number of peas:
20
Length of row:
12.0
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