science

• Acceleration


  The rate of change in velocity with time. It is a vector quantity having both magnitude (force) and direction.
• Uniformly Accelerated Motion (UAM)

  The value of the acceleration is constant. It does not change. The velocity changes but at a constant rate.
• Object with zero acceleration

  In uniform motion
• Object in uniformly accelerated motion


  Has non-zero but constant acceleration
• Acceleration


  Represents how velocity changes with time
• Velocity


  Represents how position changes with time
• Uniform acceleration


  A body maintains a constant change in its velocity in each time interval along a straight line
• Projectile motion


  A combination of uniform motion along the horizontal and the motion of a freely falling body along the vertical. It is an instance of uniformly accelerated motion in two dimensions.
• Projectile


  The moving body or an object undergoing projectile motion
• Trajectory


  The curved path it travels
• Range


  The horizontal distance it covers
• Parabola


  The parabolic path
• Horizontal motion


  • Neglect air resistance
  • Constant horizontal velocity (Vx)
  • Horizontal acceleration is 0
  • Horizontal distance as range (dx)
• Vertical motion


  • The force acting upon in this motion is the force of gravity
  • Vertical velocity (Vy) is not constant
  • Vertical distance as the height (dy)
• Projectile launched at an angle

  • Angle is a numerical value in degrees
  • When an object rises the vertical velocity (Vy) is decreasing, this is because the direction of gravity is opposite to the projectile motion
• Andesitic


  • Lava is too viscous to travel far and tends to break up as it flows
• Basaltic


  • Very fluid-like flow and can travel a great distance forming a thin sheet
• Rhyolitic Dome


  • Lava is so viscous that it piles up a vent as a dome
• Active


  Has at least one eruption during the past 10,000 years
• Inactive


  No recorded eruption in more than 10,000 years but could erupt in the future
• Composite


  • Tall conical mountain composed of alternating layer of lava-flow
• Shield


  • Circular base, gentle slopes, basaltic, non explosive and are formed from a non-viscous oozing lava
• Cinder


  • Monogenetic and has a single vent and were built from blobs of ejected lava
• Effusive


  Quiet or non-explosive eruption that releases huge amounts of lava but less ash and dust
• Pyroclastic


  Hardened magma that is blasted into the air
• Explosive


  Less common type of eruption but is more destructive and produces clouds of hot ash, gas and rock fragments
• Strombolian


  Eruptive style that involves frequent outbursts of lava fragments
• Vulcanian


  Eruptive style that involves moderate explosions of gas and volcanic ash
• Plinian


  Eruptive style that is intensely violent kind of volcanic eruption
• Andesitic


  • Lava is too viscous to travel far and tends to break up as it flows
• Basaltic


  • Very fluid-like flow and can travel a great distance forming a thin sheet
• Rhyolitic Dome


  • Lava is so viscous that it piles up a vent as a dome
• Active


  Has at least one eruption during the past 10,000 years
• Inactive


  No recorded eruption in more than 10,000 years but could erupt in the future
• Composite


  • Tall conical mountain composed of alternating layer of lava-flow
• Shield


  • Circular base, gentle slopes, basaltic, non explosive and are formed from a non-viscous oozing lava
• Cinder


  • Monogenetic and has a single vent and were built from blobs of ejected lava
• Effusive


  Quiet or non-explosive eruption that releases huge amounts of lava but less ash and dust
• Pyroclastic


  Hardened magma that is blasted into the air
• Explosive


  Less common type of eruption but is more destructive and produces clouds of hot ash, gas and rock fragments