Q: What is the color of the powder of a mineral? Read this paragraph and choose the correct option from the provided answers: Streak is the color of the powder of a mineral. To do a streak test, you scrape the mineral across an unglazed porcelain plate. The plate is harder than many minerals, causing the minerals to leave a streak of powder on the plate. The color of the streak often differs from the color of the larger mineral sample, as Figure below shows. Choices: - gray - organic - blue - streak A:
streak

Q: Behind the pupil, a single lens focuses light on a layer of what? Read this paragraph and choose the correct option from the provided answers: Choices: - photons - chloroplasts - electrons - photoreceptors A:
photoreceptors

Q: What are 3 types of light? Read this paragraph and choose the correct option from the provided answers: Electromagnetic waves that are commonly called light fall roughly in the middle of the electromagnetic spectrum. Light includes infrared light, visible light, and ultraviolet light. Choices: - complementary, incandescent, fluorescent - diffuse, ambient, opaque - solar , visible , ultraviolet - infrared, visible, ultraviolet A:
infrared, visible, ultraviolet

Q: What type of pollution is generated by power plants and factories that can directly raise the temperature of water? Read this paragraph and choose the correct option from the provided answers: Thermal pollution raises the temperature of water. It is commonly caused by power plants and factories. The change in temperature can kill fish and other water organisms. Choices: - atmospheric pollution - Space Pollution - variable pollution - thermal pollution A:
thermal pollution