____blows out hot air_________ 2. What does a thermostat do if it gets too hot? _______stops blowing hot air_____________ 3. How do our bodies sometimes act like a thermostat? _______in homeostasis, negative feedback is used in the same way, by increasing the stimulus until it is excessive and then decreasing or stopping___________________________________________________ _______________________________________________ Gizmo Warm-up To survive, an organism must be able to maintain stable internal conditions in a changing environment.
Tanker Test 1.) Hauling liquids in tankers requires special care for two reasons. One reason is the _______ center of gravity that tankers have.-High. 2.) You need to be extremely cautious when driving smooth bore tankers.
* * * What role does the trachea and surfactant play within the respiratory system? [2] * The trachea protects the airway from over expansion and collapsing due to respiratory pressure changes and it consists of a series of c-shape rings which makes it stable and flexible. Since the esophagus runs parallel posteriorly to the trachea, the open portions of the trachea’s C-shaped rings face posterior toward the esophagus that allows a bending movement of the trachea and easily allows food to pass through the esophagus. Surfactant is an important oily substance secreted by septal cells that covers the thin layer of water coating on the alveolar surface. Surfactant promotes easy expansion (inhale) of the alveoli and prevents the alveoli from collapsing during exhale.
Substitute | Use an alternative product that is less hazardous | 3. Engineer | Install appropriate exhaust ventilation that may remove fumes and only allow trained staff to do this job | 4. Administration | Have procedures about how to do the job safely and restrict access to hazardous areas | 5. Use PPE | Provide goggles, gloves, eye masks | C: Stacking shelves with products requiring repetitive lifting and bending 1. Eliminate Risk | Automate the process to remove manual handling | 2.
Then, a well is vertically drilled from the surface into the ground, and then horizontally to the point that access to the target rock containing the gas is possible. A steel pipe is then inserted into the well. The pipe must have pores on some part that will access the deeper level containing natural gas to allow the fracking fluid to flow out of the pipe to react within the target zones, (Schmidt, 2011). The pores form the route through which the gas will flow into the well and up to the surface as well as the flow of the fracking fluid back to the surface. The volume of the fracking fluid ejected through the pores exceeds the volume of the same that penetrates to the target zones.
Class B fires are those that involve flammable or combustible liquids and gasses. Using foam is one of the main ways to control a Class B fire. Class C fires involve energized electrical equipment that must be de-energized; for instance, a burning electrical generator. Once the object is de-energized in most cases the fire can be handled like a Class A or B fire. Class D fires or combustible metals that burn at extremely high temperature levels, and most metals cannot be put out with just water and dry powers are
Make sure the rubber stopper is securely in place since gas can easily leak out. Collecting the gaseous product: Prepare the gas collection bottle by positioning the bottle so that its mouth is. directly over the hole at the bottom of the trough; this is where the gas will enter the bottle. After the reaction, slide a square of glass over the mouth of the bottle while the bottle is still under water. Keeping the glass fixed to the mouth, raise the collection bottle and invert.
Alot of the masks contain center ventilation orifice allowing easy air exchange and helps prevent buildup of CO2(the thick smoke created by fire). To help improve the protection of the masks extensive test can be done on the masks to ensure that the firemans health is protected. according to Marshall Brain, "The problem with air-purifying respirators is that any leak in the mask makes them ineffective. The leak could come from a poor fit between the mask and the user's face, or from a crack or hole somewhere on the mask"( Brain, Marshall How Gas Masks Work, http://science.howstuffworks.com/gas-mask1.htm). During fire fighting anything can happen to your equipment or even the equipment you are
Some of the environmental issues related to hydraulic fracturing must be investigated and regulations must be put in place. As a nation dependent on energy we must regulate and consider all consequences before allowing the depletion of yet another natural and non-renewable resource. Environmentalists claim an array of issues related to fracking. Polluted groundwater and aquifers, micro seismic events, disposal of waste water and the mining of the silica sand which is used in the process are all by-products of a loosely regulated practice. Studies have been done, from measuring the effects on drinking water to monitoring seismic events related to fracking.
The prevention of fire spreading boils down to the understanding of the fire triangle and how fuel and oxygen plays a great part in it. You could prevent fire from spreading through safe practices such as storing flammable materials