QUIZ QUIZ (baka lumabas sa exam)

• Phase of the Moon that follows the waning crescent

  New Moon
• Why don't we have a lunar eclipse every month

  The Moon's orbit is inclined relative to Earth's orbit and when the moon is full, it is generally either north or south of Earth's shadow
• Events where the circular shadow of the Earth can be observed most notably

  • Lunar eclipse
• Shape of the Earth as described by modern astronomy

  Oblate spheroid
• Position of the North Star if you go nearer the equator

  Closer to the horizon
• What can be observed of a cruising ship if the Earth is a flat disc
• Heliocentrism


  Astronomical model in which the Earth and planets revolve around the Sun
• Geocentrism


  Any theory of the structure of the solar system (or the universe) in which Earth is assumed to be at the center of it all
• Eclipse


  Obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination
• Solstice


  Either of the two times in the year, the summer solstice and the winter solstice, when the sun reaches its highest or lowest point in the sky at noon, marked by the longest and shortest days
• Kepler's laws of planetary motion


  Laws formulated by Kepler using Brahe's data and observations
• Kepler's first law


  Planets move along an elliptical path with the Sun at one of the foci
• The following are the laws formulated by Kepler using Brahe's data and observations, EXCEPT
• Kepler's second law


  A planet moves more rapidly when near the Sun than when farther away
• Kepler's third law


  Planets close to the Sun have shorter periods than those farther away
• What Galileo did NOT observe
• Phase of the Moon that follows the waning gibbous

  Third Quarter
• Examples of violent motion

  • A laptop pushed along the table
• Galileo's concept of falling objects in his experimentation

  Object falling with uniform acceleration
• Essence of seatbelt in car

  • For the safety of the passenger
  • Seatbelts allows the passenger to stay in place, when the car suddenly stops
  • Seatbelts are important safety devices in a car
• Who proved that all falling objects fall with uniform acceleration
• What causes the object in vacuum to fall at the same time
• Who proved that a heavier object falls faster than a lighter object
• Who is well known for his experiment of dropping a cannonball in the Leaning Pisa Tower
• According to Aristotle, which falls faster, a heavier or a lighter object
• Newton


  Father of modern science and a mathematician
• Motion


  Ability of an object to change its position within a given time
• Point of reference


  In measuring the motion, it is always observed
• Acceleration


  Change in velocity with time
• Free-fall acceleration


  Symbol g
• Galileo's concept of falling objects in his experimentation
• Which object will first reach the ground among X, Y, and Z with masses 6 kg, 8 kg, and 16 kg respectively, dropped simultaneously with no air resistance
• Force


  A push or a pull
• When you slide a toy car across the floor

  Force must be stronger than friction force
• A piece of paper is at rest on your desk
• Gravity


  Force that always pulls downward on objects
• Unbalanced forces


  Cause a change to the motion of an object
• When a balloon held between the hands is pressed, its shape changes
• Friction


  Force that opposes motion between two surfaces that are in contact
• Friction


  Common unbalanced force acting on an object in motion