3) Explain how you could change the temperature at which water boils. 4) Read the section at the end of Ch 2.1 labeled Physical Changes on page 42 of your textbook and answer the following questions; a) Define a physical change, b) Name 5 verbs that describe physical changes and c) Name an example of a reversible and an irreversible physical change. Safety Map: Use an entire page of your lab book to carefully draw a detailed sketch (on graph paper) of the chemistry lab. Color code the follow items; Safety Equipment (Red), Fume Hoods (green), Lab Tables and Doors (black) and Sinks/Projector Screen (Blue). Hypothesis: If I heat water at a constant rate, then it will boil at: 37___________ Celsius.
Sea floor spreading forms the best evidence for continental drift. Critically discuss this statement. There is lots of evidence to support the theory of continental drift, including Harry Hess’s discovery of sea floor spreading theory. By using sonar, Hess found that oceans were shallower in the middle, allowing him to identify Mid Ocean Ridges. He suggested that at the centre of oceans, molten material would rise from the Earth’s mantle, causing new sea floor to be created, pushing the ocean floor.
Literature Review Several experiments have been done on the effects of salt on boiling water. In one experiment, Madeline Parker tested the effects of salt on boiling water by adding 2, 4 and then 6 pinches of salt to 150 ml of boiling water. Her results showed that the more salt she put in the water, the lower the boiling point or no change in temperature at all (Madeline Parker). Another experiment conducted by a 10th grade science class ran three trials of adding 10, 20, 30, 40 and 50 grams of salt to 150 ml of boiling water and found that on average, the more salt added to the water, the higher the boiling point (grade10science). Experimental Design Steps Salt will be added to boiling water in three trials Trial 1: 1.
I will be discussing factors that cause differences in hazards posed by volcanoes. I believe the most important factor is the location of a volcano and the type of volcano. The most explosive and therefore dangerous volcanoes are found on destructive plate boundaries (Over 80% of the worlds volcanoes occur at these boundaries) for example the eruption of the Nevado del Ruiz in Colombia on the 13th November in 1985 which killed over 25000 residents of Arenas and Armero. At destructive plate margins, the oceanic crust is denser than continental crust and is therefore subducts under the continental crust. Due to high temperatures in the mantle of around 3000 degrees centigrade, this oceanic crusts melts and then rises due to the convection currents in the aesthenosphere .
Safety Considerations. Cold crucibles look the same as hot ones. We heated the hydrate gently at first because the water formed can sputter. Procedures. At first we dried the crucible in the flame three times and let it come to a constant mass by measuring the weight each time.
Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome. According to a news article, video cameras recorded an eruption that produced an ash plume on 26 September. The ash plume rose to an altitude of 4.5 km (14,800 ft) a.s.l. The Level of Concern Color Code remained at Orange. Geologic Summary.
Its maximum speed is 55 knots and an effective range of 50km at a speed of 40 knots. Shkval-E Shkval-E is a high-speed torpedo manufactured by Tactical Missiles Corporation JSC Russian. This torpedo can be launched from submarines and surface ships at sea level Sea State 4 from a depth of 30m. Shkval-E Shkval-E. Picture: Vitaly V. Kuzmin Torpedo with 8,2m long, 533mm diameter and weighs 2.7 ton warhead carries a high equivalent to 210 kg of
Where is the park located and what are its' dimensions? The base of the Cascade Range was constructed as the Earth's crust folded and uplifted, pushing the seas westward. Molten rock pushed toward the surface, creating both violent eruptions and forcing an incredible amount of lava upward through enormous cracks. Within the past 750,000 years these explosive eruptions built a string of volcanoes on this plateau base. This Cascade Range of volcanoes extends from Canada's Mount Garibaldi to Lassen Peak in northern California.
Kool- Aid Dissolving Latent Lab Introduction In this latent lab the class tested to see how kool- aid capsules would react in different Temperatures of water. The purpose of this lab was to see how viruses react when they enter into a cell. There were many principles used for this particular lab. The hypothesis drawn was that The Kool- aid capsules would dissolve faster in the hotter water. This hypothesis was chosen because it’s easier to digest hot water than it cold.
The Island of Aruba is the result of lava hardening from a volcano that occurred almost 100 million years ago underwater. Eventually sediments formed new types of rocks, which came to the surface and began the process of island building. On the Island today the north coast is made up of a jagged coastline filled with all sorts of rocks. “Limestone’s are the youngest rocks that make up Aruba and that surround the islands older rocks. Limestone formed after and on top of the older rocks.” (Archaeological Museum Aruba, 3) While limestone is very common rock on Aruba, a white and black speckled plutonic rock called quartzdiorite is also another prevalent part of the landscape.