Which of the following is the best example of weathering? The correct answer is (a) the cracking of rock caused by the freezing and thawing of water. What causes physical weathering quizlet? Physical weathering can be caused when rocks formed under pressure deep within the Earth become exposed at the surface. When overlaying material is […]
Why does it occur when the brakes are applied suddenly?
Why does it occur when the brakes are applied suddenly? Answer: It is due to inertia of motion. When the driver of a fast moving car suddenly applies brakes the passengers in the car? When a moving bus suddenly applies brakes, the passengers sitting in it fall in the forward direction. This can be explained […]
Why are many rocks round?
Why are many rocks round? Maybe you’ve noticed that many of the rocks you see are rounded. These rocks’ jagged edges are a sign that they have fairly recently broken off from a larger block of rock. The reason for this is that over time, weathering tends to make rocks round. What are round rocks […]
What are the similarities and differences between binary fission and mitosis?
What are the similarities and differences between binary fission and mitosis? Binary fission is a method of asexual reproduction which single-celled organisms, usually prokaryotes, use to create a copy of themselves. Another term for the process is cellular cloning. Mitosis is cell division that results in two identical daughter cells and is primarily used for […]
Which magnitude star is brightest?
Which magnitude star is brightest? 1st magnitude Why does the rotational axis of Earth precess quizlet? Why does the rotational axis of Earth precess? The Sun and Moon pull on Earth’s equatorial bulge. Where can we see the pole star? The North Star or Pole Star – aka Polaris – is famous for holding nearly […]
What are safety symbols?
What are safety symbols? Safety symbols, hazard symbols or safety labels are meaningful and recognizable graphical symbols that warn of or identify hazards associated with the location or item. What Colour is safety signs? Health and Safety (Safety Signs and Signals Regulations) 1996 Type Shape Colour WARNING SIGNS These signs give warning of potential risks […]
What are some examples of physical and chemical properties?
What are some examples of physical and chemical properties? Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change. What are the physical properties of materials? A material’s physical properties denote the physical state of materials that are exclusive […]
What is an example of a good hypothesis?
What is an example of a good hypothesis? Here’s an example of a hypothesis: If you increase the duration of light, (then) corn plants will grow more each day. The hypothesis establishes two variables, length of light exposure, and the rate of plant growth. An experiment could be designed to test whether the rate of […]
What happens to molecules when air heats?
What happens to molecules when air heats? What happens when air is heated or cooled? So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward. This is the concept […]
Why is Group 15 called nitrogen?
Why is Group 15 called nitrogen? The Group 15 elements are generally known as the nitrogen family. All of the elements of this family have five electrons in their outermost energy level. This group is divided into nonmetals, semimetals, and metals by characteristic. Nitrogen is a diatomic gas and phosphorus is a solid. Why is […]