What chemicals are needed for muscle contraction? In order to perform the mechanical work of contraction, actin and myosin utilize the chemical energy of the molecule adenosine triphosphate (ATP). What are two ways that calcium is needed for muscle contraction to occur be specific? (1) Calcium binds to troponin C, causing the conformational shift in […]
How do you talk about timbre?
How do you talk about timbre? Terms we might use to describe timbre: bright, dark, brassy, reedy, harsh, noisy, thin, buzzy, pure, raspy, shrill, mellow, strained. I prefer to avoid describing timbre in emotional terms (excited, angry, happy, sad, etc.); that is not the sound quality, it is its effect or interpretation. What does timbre […]
Do forces have direction?
Do forces have direction? A force is a vector quantity. As learned in an earlier unit, a vector quantity is a quantity that has both magnitude and direction. Because a force is a vector that has a direction, it is common to represent forces using diagrams in which a force is represented by an arrow. […]
What is the distance between two contour lines called?
What is the distance between two contour lines called? The elevation difference between two adjacent contour lines is called the contour interval (CI). Usually the contour interval is noted on the map legend. In most topographic maps every 5th contour line is drawn in bold print or wider than other contours. Such lines are called […]
How does heat transfer from one object to another and why does it generally flow from the hotter the colder object?
How does heat transfer from one object to another and why does it generally flow from the hotter the colder object? Thermal conduction involves energy in the form of heat being transferred from a hot region to a cooler region through a material. At the hotter end the atoms, molecules, and electrons vibrate with more […]
Does size affect buoyancy?
Does size affect buoyancy? Because the buoyancy of a solid cube of material depends on its density, which does not vary with the size of the object, changing the size of a cube does not affect whether it will sink or float. Do things weigh less underwater? A: When objects are placed in water, their […]
What happens when a solid is dissolved in a liquid?
What happens when a solid is dissolved in a liquid? In the simplest case it involves mixing two materials together. The most common examples of dissolving involve a solid and a liquid, usually water. When a solid dissolves the solid (solute) and the liquid (solvent) form a very close intimate mixture called a solution. Why […]
What are large scale maps give two examples?
What are large scale maps give two examples? Large scale maps : These maps represent small area of the earth on a large size of paper sheet with greater details. Examples: Cadastral maps, topographical maps….A map bearing a scale of 1: 4000 and larger is called : Cadastral map. Topographical map. Wall map. Atlas map. […]
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 […]