Physics
__ makes planets spherical.
A.Gravity B.Force C.None of the above.
What is Gravity?
This type of bond is formed when electrons are shared between atoms, and the sharing is often unequal, leading to partial positive and negative charges.
What is a polar covalent bond?
This organelle is known as the "powerhouse of the cell" because it produces energy.
What is the mitochondrion?
This is the sum of the first four prime numbers.
What is 17?
This type of rock is formed from cooled and solidified lava or magma.
What is igneous rock?
This is the unit of electrical resistance, named after a German physicist.
What is the Ohm?
This is the term for a chemical reaction where an element or compound reacts with oxygen, often releasing energy in the form of light and heat.
What is combustion?
This process, involving the splitting of glucose molecules to produce energy, occurs in the cytoplasm and does not require oxygen.
What is glycolysis?
This is the factored form of the polynomial x2 + 6x + 9.
What is (x + 3)2 ?
This layer of the Earth is made up of liquid iron and nickel and is responsible for generating the planet’s magnetic field.
What is the outer core?
This law of thermodynamics states that the total entropy of an isolated system can never decrease over time.
What is the 2nd law of thermodynamics?
This is the term for the heat required to raise the temperature of 1 gram of a substance by 1°C.
What is specific heat capacity?
This molecule in living organisms is made up of four nitrogenous bases: adenine, thymine, cytosine, and guanine.
What is DNA?
This is the name of the property that allows us to rearrange the terms of an expression when solving equations, such as a+b = b+a.
What is the commutative property?
This theory, proposed by Alfred Wegener, states that continents were once joined together in a supercontinent called Pangaea and have since drifted apart.
What is the Theory of Continental Drift?
This physical quantity is defined as the rate at which work is done or energy is transferred, and its SI unit is the watt (W).
What is power?
This term describes a reaction in which heat is released to the surroundings, typically resulting in a temperature increase.
What is an exothermic reaction?
These white blood cells are crucial in the immune response, recognizing and attacking pathogens such as bacteria and viruses.
What are T cells?
This number, approximately 2.718, is the base of the natural logarithm.
What is Euler's number/constant (e)?
This atmospheric phenomenon, which can develop into severe storms, is characterized by warm, moist air rising rapidly to create thunderstorms, tornadoes, and hurricanes.
What is convection?
This is the phenomenon where a wave changes direction when it passes from one medium into another, due to a change in speed.
What is refraction?
This is the term for a solution in which the amount of acid and base are in a state of equilibrium, meaning no further reaction takes place.
What is a buffer solution?
This type of symbiosis occurs when one organism benefits at the expense of another, as seen in many parasitic relationships.
What is parasitism?
Given the equation x2−6x+8=0, find the sum of the roots.
What is 6?
This type of cloud is associated with thunderstorms and can reach altitudes of up to 20 kilometers.
What is a cumulonimbus cloud?