Why is ocean water salty and lake water not? Rain replenishes freshwater in rivers and streams, so they don’t taste salty. However, the water in the ocean collects all of the salt and minerals from all of the rivers that flow into it. In other words, the ocean today probably has a balanced salt input […]
What is a haploid life cycle?
What is a haploid life cycle? The haploid life cycle is the simplest life cycle. It is found in many single-celled eukaryotic organisms. Organisms with a haploid life cycle spend the majority of their lives as haploid gametes. It quickly undergoes meiosis to produce more haploid gametes that repeat the life cycle. What is a […]
What type of image does a compound microscope produce?
What type of image does a compound microscope produce? With the compound microscope, this intermediate image is real, formed by the objective lens. In all cases, the function of the eyepiece is to form a virtual, magnified image for your eye to view. The microscope is a combination of an objective lens and a magnifier, […]
Why is temperature low at high altitude?
Why is temperature low at high altitude? The basic answer is that the farther away you get from the earth, the thinner the atmosphere gets. The total heat content of a system is directly related to the amount of matter present, so it is cooler at higher elevations. The heating of the earth itself also […]
Why does the second and third order spectra overlap?
Why does the second and third order spectra overlap? Show that the second- and third-order spectra of white light produced by a diffraction grating always overlap. What wavelengths overlap? Because the value of the sine increases with angle, this means , so the order overlap. What is the angle of second order diffraction? ±2 How […]
Do stones explode in fire?
What happens to the speed when acceleration is constant?
What happens to the speed when acceleration is constant? Sometimes an accelerating object will change its velocity by the same amount each second. This is referred to as a constant acceleration since the velocity is changing by a constant amount each second. An object with a constant acceleration should not be confused with an object […]
What are the advantages and disadvantages of space exploration?
What are the advantages and disadvantages of space exploration? Top 10 Space Exploration Pros & Cons – Summary List Space Exploration Pros Space Exploration Cons Space travel provides job opportunities Mental pressure on astronauts can be high We may find other planets to colonize Extraterrestrial life can become a danger Can foster global cooperation May […]
How do you express temperature range?
How do you express temperature range? Definitely nothing wrong with the way the temperature range is expressed. When using the degree symbol in expressing a range of temperatures in Celsius or Fahrenheit, both numbers in the range can have the symbol, thus: Water is as a liquid within the 32º – 212º F range • […]
What are four factors that affect the rate of a chemical reaction?
What are four factors that affect the rate of a chemical reaction? There are four main factors that can affect the reaction rate of a chemical reaction: Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction. Physical state of the reactants and surface area. Temperature. Presence of […]