Is the control group the independent variable? The independent variable is “controlled” or held constant in the control group. A single experiment may include multiple experimental groups, which may all be compared against the control group. The purpose of having a control is to rule out other factors which may influence the results of an […]
What are some similarities and differences between physical and chemical weathering?
What are some similarities and differences between physical and chemical weathering? While physical weathering breaks down a rock’s physical structure, chemical weathering alters a rock’s chemical composition. Physical weathering works with mechanical forces, such as friction and impact, while chemical weathering takes place at the molecular level with the exchange of ions and cations. Why […]
Why does temperature increase with mass?
Why does temperature increase with mass? If density increases ,volume decreases and if density decreases , volume increases. So density*volume=mass remains same as before. Gravitational pressure increases the more mass there is, and that pressure creates energy that increases temperature. Why does it take longer to heat up a larger volume of water? Simple: you’re […]
What is the function of striated muscle?
What is the function of striated muscle? The primary function of striated muscles is to generate force and contract in order to support respiration, locomotion, and posture (skeletal muscle) and to pump blood throughout the body (cardiac muscle). What is the difference between striated and smooth muscle? Striated muscle is composed of muscle fibers, made […]
How are breaks classified?
How are breaks classified? Classification of Brakes • The following are the classifications of Brakes 1.By method of power a) Mechanical brakes b) Hydraulic brakes c) Air brakes d) Vacuum brakes e) Power assisted hydraulic brakes f) Magnetic brakes g) Electrical brakes 2.By method of application: a) Service or foot brakes b)Parking or hand … […]
Is nitrogen harmful to humans?
Is nitrogen harmful to humans? High concentrations of nitrogen gas can be particularly harmful to human health. Nitrogen can displace oxygen from ambient air within an enclosed space leading to a dangerous build-up of the inert gas. Is nitrogen safe to consume? Liquid nitrogen, although non-toxic, can cause severe damage to skin and internal organs […]
What is difference between balanced and unbalanced force?
What is difference between balanced and unbalanced force? If two individual forces are of equal magnitude and opposite direction, then the forces are said to be balanced. An object is said to be acted upon by an unbalanced force only when there is an individual force that is not being balanced by a force of […]
What are the behavioral adaptations of a giraffe?
What are the behavioral adaptations of a giraffe? A behavioral adaptation giraffes make when they drink water is to gulp it. Gulping is drinking a lot of liquid quickly without choking. Giraffes gulp as much as 10 gallons of water in a few minutes. They have also adapted the ability to go a long time […]
What is the conversion factor between km H 2 and M S 2?
How are the two variables associated with each other?
How are the two variables associated with each other? Association between two variables means the values of one variable relate in some way to the values of the other. Association is usually measured by correlation for two continuous variables and by cross tabulation and a Chi-square test for two categorical variables. What can be used […]