Science

• The Earth's diameter is approximately how many kilometers?

  12,756 km
• Glass is made of the mixture of:?

  Sand and Silicates
• The mass number of a nucleus is:?

  the sum of the number of protons and neutrons present in the nucleus.
• Which particle contributes the negative charge to the atom?

  Electron
• Energy cannot be created or destroyed
• Which occurs when atoms link together in new ways to create a substance different from the original substances?

  Chemical Change
• The element Tellurium has the atomic mass of 127.60 and its atomic number is 52. How many neutrons are in the element Tellurium?(subtracting the number of protons (the atomic number) from the atomic mass)

  76
• Which particle does not contribute mass to the atom?

  Electron
• Which has the most kinetic energy at position? (kinetic energy of an object is the form of energy that it possesses due to its motion)

  X

  
• Mumps is a disease caused by:?(A contagious viral infection that can be serious. Common symptoms include painful swelling of the jaw, fever, tiredness, appetite loss, and headache.)

  Virus
• Distillation is the process of separating liquids by using _____.?

  Evaporation and condensation
• What feature of the ocean floor develops in region labeled A?

  Mid-ocean ridge

  
• What is the Mid-ocean Ridge? (Pushed apart forming two different plates moving in two different directions)

  New crustal material is forced to the surface.
• What is the Ocean Trench? (It is melted and turned into magma.)


  Old crustal material is pushed under another plate.
• It is a special area of the atmosphere that protects the Earth from harmful ultraviolet rays emitted by the sun.

  Ozone Layer
• The universal law of gravitation was propounded by?

  Isaac Newton
• The gravitational force with which the sun attracts the earth:?

  Is same as the force with which the earth attracts the sun.
• Metamorphic rock can form from?

  Igneous and Sedimentary Rock
• The living material comprising the bulk of a cell is called the:

  Protoplasm
• What is not found in Cytoplasm?

  Nucleus
• A collective term for the combination of cytoplasm and nucleus?

  Protoplasm
• According to Newton’s third law of motion, the strength of a reaction

  force is ___the strength of the action force.

  equal to
• A battery operated DVD player uses 12 volts from AA batteries and draws a current of 3 amperes. What is the resistance?

  4 ohms

  
• Ptyalin is an enzyme produced in the: (Function: begins the digestion process and breaks down carbohydrates into simple sugars.)

  Salivary glands
• Which is/are the important raw material(s) required in cement industry?

  Limestone and clay
• Which component of a nucleotide contains the information needed to make proteins?

  Base
• Which symbiotic relationship is described by one individual benefiting and the other being neither harmed nor benefited?

  Commensalism
• A type of symbiotic relationship where all species involved benefit from their interactions

  Mutualism
• What it the process called when acids and bases react to form salt?

  Neutralization
• The gas used for artificial ripening of green fruit is: (It is an organic gas that is composed only of hydrogen and carbon.)

  Ethylene
• One should not connect a number of electrical appliances to the same power socket because:

  this can damage the domestic wiring due to overloading.
• What is the correctly places the stages of mitosis in order?

  Prophase, Metaphase, Anaphase, Telophase
• When velocity is doubled:?

  Momentum is doubled
• The momentum is ___ proportional to the objects mass and velocity?

  Directly
• Fill in the blanks: Proteins are made of different ____________ which are arranged in different orders, or _________________.

  Amino acids, sequences
• According to the law of conservation of momentum, when two objects collide in the absence of outside forces,

  the objects have the same momentum before and after they collide.
• During summer, we feel comfortable under a fan because it:

  Set the air in motion, thereby increasing the evaporation of sweat.
• Peanut ran 50 meters in 10 seconds. What was Peanut's average speed?

  5 m/s
• According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail, the nail-

  exerts an equal and opposite force on the hammer.
• What is an example of a homozygous dominant genotype?

  BB