What is blue light and why is it bad?

What is blue light and why is it bad? Continued exposure to blue light over time could damage retinal cells and cause vision problems such as age-related macular degeneration. It can also contribute to cataracts, eye cancer and growths on the clear covering over the white part of the eye. What does blue light symbolize? […]

What is a Type D fire?

What is a Type D fire? Class D. Class D fires involve combustible metals, such as magnesium, titanium, and sodium. Extinguishers with a D rating are designed to extinguish fires involving combustible metals. Note: Common extinguishing agents may react with a combustible metal fire causing the severity of the fire to increase. What is a […]

What are the 3 field forces?

What are the 3 field forces? Field forces are also called noncontact forces or at-a-distance forces. There are four types of field forces: gravity, electromagnetic forces, and the strong force and the weak force found in atoms. What are two field forces examples? Examples of force fields include magnetic fields, gravitational fields, and electrical fields. […]

What are 2 facts about the troposphere?

What are 2 facts about the troposphere? Fact Sheet The troposphere contains 75% of the atmosphere’s total mass. In either space or time the troposphere is not constant. Weather occurs in the troposphere. The troposphere is 10 miles from the equator. The troposphere is 5-7 miles above the poles. Does not contain ozone. Why do […]

What is special about summer solstice?

What is special about summer solstice? The day that the Earth’s North Pole is tilted closest to the sun is called the summer solstice. This is the longest day (most daylight hours) of the year for people living in the northern hemisphere. It is also the day that the Sun reaches its highest point in […]

Does your little toe help you balance?

Does your little toe help you balance? Your toes play an important role in keeping you balanced as you move, whether you’re barefoot or wearing shoes. Your pinky is the smallest toe, but it’s crucial in helping you to maintain your balance. It helps to think of your foot as having a triangular base of […]

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