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Science 作者: Mind Map: Science

1. Waves

1.1. Mechanical waves

1.1.1. Transverse waves

1.1.1.1. Law: motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance

1.1.1.1.1. Light bender

1.1.2. Longitudial waves

1.1.2.1. Law: Longitudinal waves are waves in which the vibration of the medium is parallel to the direction the wave travels and displacement of the medium is in the same direction of the wave propagation.

1.1.2.1.1. Experiment 'How age affects heart abilities

1.1.3. Surface waves

1.1.3.1. lLaw: Travel more slowly through Earth material at the planet's surface and are predominantly lower frequency than body waves.

1.2. Electromagnetic

1.2.1. Radio

1.2.1.1. Radio waves have the longest wavelengths in the electromagnetic spectrum

1.2.2. Microwaves

1.2.2.1. They are reflected by metal; they pass through glass, paper, plastic, and similar materials; and they are absorbed by foods.

1.2.3. Infrared

1.2.3.1. Infrared waves have longer wavelengths than visible light and can pass through dense regions of gas and dust in space with less scattering and absorption.

1.2.4. Ultraviolet

1.2.4.1. stimulation of production of vitamin D, sunburn, suntan, aging signs, and carcinogenic changes

1.2.5. X-rays

1.2.5.1. A form of electromagnetic radiation, similar to visible light.

1.2.6. Gamma rays

1.2.6.1. Have the smallest wavelengths and the most energy of any wave in the electromagnetic spectrum, Cannot pass only through copper

2. Forces

2.1. Friction

2.1.1. Physics

2.1.1.1. Newton's law

2.1.1.1.1. Fistst law

2.1.1.1.2. Second law

2.1.1.1.3. Third law

3. Graphs and tables

3.1. Variables

3.1.1. Basic equipment

3.1.1.1. disscusions

4. Nutrition

4.1. cooking

4.1.1. Finances management

4.2. Counting calories

5. Building cars

5.1. Lab report

5.1.1. Speed/time