Infrared Radiation
Infrared (IR) radiation is a type of electromagnetic radiation that has longer wavelengths than visible light. It is invisible to the human eye but can be felt as heat. IR radiation is emitted by all objects with a temperature above absolute zero.
Properties of Infrared Radiation
- Wavelength: Infrared radiation has wavelengths longer than those of visible light, typically ranging from 700 nanometers to 1 millimeter.
- Heat Sensing: IR radiation is commonly used in heat-sensing devices, such as infrared thermometers and thermal imaging cameras.
- Penetration: IR radiation can penetrate certain materials, such as clothing, plastics, and fog, making it useful for various applications.
- Applications: It is used in various applications including remote controls, night vision devices, and in the study of celestial objects.
Effects of Infrared Radiation
Exposure to high levels of IR radiation can lead to thermal burns and eye damage. It is important to use protective measures when working with high-intensity sources of IR radiation.
Study Guide
- Define infrared radiation and explain its relationship to temperature.
- Compare the wavelengths of infrared radiation to those of visible light.
- Describe the practical applications of infrared radiation in everyday life and various industries.
- Discuss the potential health hazards associated with prolonged exposure to infrared radiation.
- Research and present a case study on a specific technology or device that utilizes infrared radiation.
◂Science Worksheets and Study Guides Eighth Grade. Volcanoes
Worksheet/Answer key
Volcanoes 
Worksheet/Answer key
Volcanoes Worksheet/Answer key
Volcanoes Vocabulary/Answer key
Volcanoes Vocabulary/Answer key
Volcanoes Vocabulary/Answer key
Volcanoes
Worksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
Earth/Space Science: Students will use scientific skills and processes to explain the chemical and physical interactions (i.e., natural forces and cycles, transfer of energy) of the environment, Earth, and the universe that occur over time.
Earth History: Explain how sedimentary rock is formed periodically, embedding plant and animal remains and leaving a record of the sequence in which the plants and animals appeared and disappeared.
Explain how sedimentary rock buried deep enough may be reformed by pressure and heat and these reformed rock layers may be forced up again to become land surface and even mountains.