"Scale of Objects and Their Measurement" Scale, Mass and Density of the Material World PPT Courseware 4

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"Scale of Objects and Their Measurement" Scale, Mass and Density of the Material World PPT Courseware 4

The geometric scale of the physical world

Everything in the universe, from the numerous stars to our earth, from the vast mountains to the roaring rivers, from the tall buildings to the molecules and atoms that make up matter, all have certain dimensions and occupy a certain space.

The Andromeda Nebula is 160,000 light-years in diameter and is about 2.2 million light-years away from us.

The radius of the earth is 6 400 km

The altitude of Mount Everest is approximately 8 844 m

The Yangtze River in my country is approximately 6,400 km long

Measurement of length

(1) Unit of length

SI unit of length: meter (m)

Common units of length:

Kilometer (km) Decimeter (dm) Centimeter (cm)

Millimeter (mm) Micrometer (μm) Nanometer (nm)

(2) Tool for measuring length - scale

(3) How to use the scale

Step 1: Observe the 0 scale line and division value of the scale.

Step 2: Align the 0 mark (or the whole mark) of the scale with one end of the object being measured. The scale of the scale should be close to the object being measured and should not be skewed.

Step 3: When reading, face the scale line facing the end of the object being measured.

Step 4: Pay attention to the reading and bring the units.

Measurement of volume

(1) Use a scale to measure the volume of a regular solid

(2) Use a measuring cylinder (cup) to measure the volume of liquid

Can you use a measuring cylinder to measure the volume of the small stone in the picture?

1. Can you use a map to measure the approximate length of the Beijing-Guangzhou Railway?

2. Can you read a water meter?

Find out how much water your home has accumulated.

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For more information about the PPT courseware "Scale, Mass and Density of Objects and Their Measurement in the Material World", please click the Scale, Mass and Density of the Material World ppt Scale and Measurement of Objects ppt tag.

"Scale of Objects and Their Measurement" Scale, Mass and Density of the Material World PPT Courseware 5:

"Scale of Objects and Their Measurement" Scale, Mass and Density of the Material World PPT Courseware 5 Practice using scales 1. In the picture, the correct way to measure the width of a wooden block with a scale is ( ). 2. The basic tool for measuring length is ____. As shown in the figure, the two scales...

"Scale of Objects and Their Measurement" Scale, Mass and Density of the Material World PPT Courseware 3:

"Scale of Objects and Their Measurement" Scale, Mass and Density of the Material World PPT Courseware 3 1. Measurement of Length 1. Unit ① Length is represented by the symbol _____. ②In the International System of Units, the unit of length is _____, represented by the symbol _____. In addition to rice, there are...

"Scale of Objects and Their Measurement" Scale, Mass and Density of the Material World PPT Courseware 2:

"Scale of Objects and Their Measurement" Scale, Mass and Density of the Material World PPT Courseware 2 The altitude of Mount Everest is about 8848 m. The Yangtze River in my country is about 6400 km long. The diameter of small objects that can be distinguished by the human eye is about 10_4 m. Benzene The diameter of the molecule is approximately...

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Update Time: 2024-11-18

This template belongs to Physics courseware Beijing Normal University eighth grade physics volume one industry PPT template

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