Black holes are regions of space-time that prevent anything, including light, from escaping. The reason for this is that black holes are extremely dense and so the escape velocity required to escape the black hole must be huge. It should be made clear that a black hole is a distortion of space-time (Einstein had described…
Purpose: The purpose of the lab was to dissolve Copper salt in water with an excess of Aluminum. The mass of the Copper formed was to be determined and the percentage yield was to be calculated. Related theory A chemical reaction is the change of substance into a new one that has a different chemical…
The global average air and ocean temperatures have been gradually increasing from 1880-2010 (Fig.1) This increase in temperature melted a massive amount of ice and snow globally which ultimately, caused the global average sea level to also rise (Fig.2). The Earth’s average surface temperature rose by 0.74 ± 0.18°C over the period 1906–2005. Global average…
The Ordovician period is placed between 488.3±1.7 to 443.7±1.5 million years ago.1 It is preceded by the Cambrian period and is followed by the Silurian Period as seen in Figure 1.1 Initially, only these two periods existed, until 1979 when Charles Lapworth defined the Ordovician period as a period of its own based on fossil…
Mount Tambora, is an active stratovolcano famous for its eruption in 1815 which was considered one of the most explosive volcanic eruptions in Earthʼs history. A stratovolcano is a volcano characterized by its steepness and periodic explosive eruptions and quiet eruptions. It is also known as a composite volcano because it is composed of layers…
Aorta Basophils Cardiac Muscle Cardiac Muscle Longtudinal Cerebellar Cortex Cerebral Cortex Spinal Cord Eosinophils Epiphyseal plate Femoral Artery Femoral Vein Howship’s lacunae Jejunum lamina propria Liver Lymph node Lymphocyte Monocyte Spinal cord (silver) Neutrophil Pacinian corpuscle Peripheral Nerve Peripheral Nerve 2 Respiratory Epithelium Spinal cord (silver) 2 Simple Cuboidal Epithelium Simple Columnar Epithelium Skeletal Muscle…
Worms do many of the things humans do to survive. They breathe, move around, reproduce, and eat. Worms have the epidermis; which is like our skin, a layer of nerve tissue, which acts like our sense of touch. Instead of having just one heart, they have five hearts. These hearts regulate blood flow and produce…
Research question: All organisms have activities, organisms use energy to accomplish activates. Organisms eat food to gain energy, this energy is stored for later use. Since humans are organisms we eat food to gain energy. Which food of the same category gives us more energy? Hypothesis: Since fat is the main reserve that is burnt…
Metalloids: Are the least common type of elements, their properties are a mix of nonmetal and metal properties. The metalloids are hybrid elements. Perhaps the most important characteristic of metalloids is that they partially conduct electricity for semi-conductors. Nonmetals: Are opposites of metals, that’s why they are called nonmetals (not metals). They are not malleable…
The Kakapo (Strigops habroptilus) is a nocturnal parrot species belonging to the Strigopidae family. This solitary bird is sexually dimorphic in its body mass (males 1.6- 3.6 kg, females 0.9- 1.9 kg), and is the heaviest parrot species in the world [1]. Adorned in a multitude of colours, the Kakapo’s green and yellow feathers allow…
Gravity is the force that attracts matter together (Northwestern). When an object is under the influence of gravity it is referred to as a free fall object. Two things that always remain true about free fall objects on earth are their acceleration is always at 9.8 m/s/s and they never encounter air resistance. It is…
Purpose: To separate DNA molecules according to their size. This can be done for forensic purposes, to look for disease in specific genes or paternity testing. Brief overview: DNA is negatively charged, in order to separate it by size it is put in a solution with a current running through it that pulls the negatively…
What gas was produced by the breakdown of hydrogen peroxide? Oxygen gas was produced. Describe the test that was performed in order to identify the gas. A glowing splint of a match was lit, blown out then inserted into the test tube. The match relighting in the test tube indicates oxygen gas is present. Can…
Objective: In this lab, we will perform the catalyzed decomposition of hydrogen peroxide under various conditions. We will record the trials using a gas pressure sensor in a lab quest and analyze graphs of the data. From this analysis, we will determine the rate constant, the activation energy and the rate law for the reaction.…
Current global population and impact of growing population in developing countries As global populations expand and shift, the healthcare sector is coming under increased pressure. In the developed world, aging populations and extended life expectancy have led to an increasing prevalence of chronic, expensive to treat diseases and disabilities and a growing shortage of healthcare…
In New Guinea, an amazing rainforest arises. 0.5% of the Earth’s surface. New Guinea rainforest has immense biodiversity, containing between 5-10% of total species on Earth. Some plants in New Guinea are more than 100,000,000 years old. The lowland rainforests need 2,500 mm of rain each year. Some species like the lowland forests, for birds,…
Definition of Biodiversity Biological diversity – or biodiversity – is the term given to the variety of life on Earth. It is the variety within and between all species of plants, animals and micro-organisms and the ecosystems within which they live and interact. 5 ways humans have affected biodiversity: 1) Clearing land for building. 2)…
The purpose of this experiment is to discover the reaction rate in which acid rain weathers marble statues, or in our case, marble chips. Introduction Marble is especially sensitive to the degrading by acidic chemicals, also to weathering. Acid rain is one of the top degradation agents for marble artifacts around the world. Acid rain…
DNA extraction/Separation is the first step in the genetic engineering process. This is accomplished by taking a sample containing the gene of interest (the Bacillus thuringiensis ) and taking it through a series of steps that separate the DNA from the other parts of a cell. During DNA extraction, all of the DNA from the organism is extracted at once.…
Areas situated in the zone between the Tropics of Cancer and Capricorn are naturally prone to these natural disasters. In this region, it is more likely for the high temperature of the ocean to cause water to evaporate. In order for a cyclone to form, it is required to have two main factors in the…