Do we eat sunlight? Yes, definitely. Almost all living things on earth are fueled by the sun either directly or indirectly. (The exception is organisms that live near volcanic vents deep in the ocean.) Energy from the sun is taken in by plants and eaten by animals. Do humans get energy directly from the sun? […]
How many branches of life science are there?
How many branches of life science are there? thirty Is Anatomy considered a life science? Other life sciences focus on aspects common to all or many life forms, such as anatomy and genetics. Some focus on the micro-scale (e.g. molecular biology, biochemistry) other on larger scales (e.g. cytology, immunology, ethology, pharmacy, ecology). What are the […]
Do electric cars really reduce emissions?
Do electric cars really reduce emissions? EVs produce fewer emissions overall than their gas-powered counterparts, but there are caveats. That means factoring in emissions associated with oil drilling and power plant smokestacks, as well as from mining metals such as nickel and cobalt that are needed for electric-car batteries. What is the best electric car […]
Can satellites see fires?
Can satellites see fires? Satellites in orbit around the poles provide observations of the entire planet several times per day, whereas satellites in a geostationary orbit provide coarse-resolution imagery of fires, smoke and clouds every five to 15 minutes. Can satellites detect fires? How Do Satellites Detect Fires from Space? NOAA satellites, such as the […]
Why are there three beams on a triple beam balance?
Why are there three beams on a triple beam balance? The triple beam balance is used to measure masses very precisely; the reading error is 0.05 gram. With the pan empty, move the three sliders on the three beams to their leftmost positions, so that the balance reads zero. Are triple beam scales illegal? Cocaine […]
Is a phobia a conditioned emotional response?
Is a phobia a conditioned emotional response? The process of classical conditioning can explain how we acquire phobias. After an association has formed, the dog (now a conditioned stimulus) causes a response of fear (conditioned response) and consequently, we develop a phobia. Can a conditioned response be unlearned? Meanwhile, a conditioned response is learned and […]
What is the magnetic field like inside a solenoid?
What is unit vector and position vector?
What is unit vector and position vector? UNIT VECTOR- a vector which has a magnitude of one. NULL VECTOR- Null vector is a vector with a zero magnitude. POSITION VECTOR- Position vector, straight line having one end fixed to a body and the other end attached to a moving point and used to describe the […]
What are the 5 points of particle theory?
What are the 5 points of particle theory? The five particle theory of matter All matter is made up of very small particles. All particles in a pure substance are the same. Different substances are made up of different particles. There is space between all particles. The particles are always moving. The particles in a […]
How is apparent brightness calculated?
How is apparent brightness calculated? Apparent brightness is thus measured in watts per square meter. For instance, the apparent brightness of the Sun is b = 1370 watts/meter2. That is, if you had a perfectly efficient solar panel one meter on a side, if you held it perpendicular to the Sun’s rays, it would generate […]