What is the relationship between the four spheres of the earth? These spheres are closely connected. For example, many birds (biosphere) fly through the air (atmosphere), while water (hydrosphere) often flows through the soil (lithosphere). In fact, the spheres are so closely connected that a change in one sphere often results in a change in […]
What are the 6 steps of action potential?
What are the 6 steps of action potential? An action potential has several phases; hypopolarization, depolarization, overshoot, repolarization and hyperpolarization. Hypopolarization is the initial increase of the membrane potential to the value of the threshold potential. What are the 5 steps of an action potential? The action potential can be divided into five phases: the […]
Why do heat engines need to reject energy to environment?
Why do heat engines need to reject energy to environment? Expelling heat lets you get a positive area in your PV curve. This argument doesn’t apply to burning oil, because that’s not a cyclic process. In order to achieve this, the system dumps this extra gained entropy by giving off thermal energy to the cold […]
Is analog or digital better for sending large amounts of data?
Is analog or digital better for sending large amounts of data? Analog signals are composed of continuous waves that can have any values for frequency and amplitude. Digital signals are a more reliable form of transmitting information because an error in the amplitude or frequency value would have to be very large in order to […]
Why does grass look green when you look at it?
Why does grass look green when you look at it? Why Grass Is Green? Like many plants, grass produces a pigment called chlorophyll. This bright pigment absorbs blue and red light, reflecting green light back to your eyes. Is grass really green? Like many plants, most species of grass produce a bright pigment called chlorophyll. […]
Is it true most elements do not change?
Is it true most elements do not change? Most elements DO NOT change. Some ELEMENTS can decay over time. The rate of decay of any radioactive element CHANGES FREQUENTLY. Geologists use radioactive dating to determine THE ABSOLUTE AGES OF ROCKS. What are the two types of radioactive decay? The two most common modes of natural […]
What are the six steps in preparing a speech?
What are the six steps in preparing a speech? The Six Steps of Speech Preparation. § Inform, Persuade, Motivate, Celebrate? What are the four main steps in preparing a speech? Steps in Preparing a Presentation. Planning Your Presentation. Step 1: Analyze your audience. Step 2: Select a topic. Step 3: Define the objective of the […]
What should you not say to your child?
What are two examples of conduction heat transfer?
What are two examples of conduction heat transfer? Some examples are: Conduction: Touching a stove and being burned. Ice cooling down your hand. Convection: Hot air rising, cooling, and falling (convection currents) Radiation: Heat from the sun warming your face. Which of the following is the best example of heat transfer by radiation? Heat transfer […]
What is the relationship between air pressure and altitude?
What is the relationship between air pressure and altitude? Pressure with Height: pressure decreases with increasing altitude. The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elevation. At higher elevations, there are fewer air molecules above a given surface than […]