Project: Key Elements of Astronomy
CHAPTER 7
SPEED - Is a scalar -measures “how fast an object is moving”
INSTANTANEOUS SPEED -the speed at any given instant in time
AVERAGE SPEED -the average of all instantaneous speed; found simply by a distance or time ratio. SPEED= distance/Time TIME= Distance/Time DISTAnce= Speed*Time
VELOCITY- is a vector
Refers to the rate at which an object changes its position
VELOCITY= displacement/time
MOTION- is a change in position with respect to a reference
ENERGY- capacity of matter to perform work as the result of its motion or its position in relation to force.
FORCE- a physical strength
ACCELERATION- measure of the change in velocity of a moving object
A= change in velocity/change in time
A= VF-V1//time
1. LAW OF ENERTIA- a body at rest will remain at rest. And a body of motion will continue moving.
FACTORS: Velocity and Mass
2. LAW OF ACCELERATION- need an acceleration and mass. FORMULA: MA
The acceleration of the body is directly proportional to the mass
3. LAW OF GRAVITATIONAL PULL
CHAPTER 8
Astronomical instruments - are used for the purpose of study, observation, or measurement of celestial objects in the science of astronomy.
Gnomon/ Sundial- a pointed vertical column of known height erected on a horizontal plane
- used primarily to show time,
- used to yield a variety of fundamental data
Armillary Sphere- a solar instrument, consisted of two bronze concentric rings, several feet in diameter, mounted in the plane of the meridian
- use for stellar observation
- to increase the precision of the results attained by the gnomon
- to increase observations to the sun and the star
Quadrant- a graduated quarter of a circle, the graduations from 0 - 90° are on the circumference
- used to measure angles up to 90°
- used to measure the altitude of celestial objects above the horizon.
Triquetrum- It consists of a vertical post to which two intersecting rods –measure angles with a better precision than the astrolabe
SPEED - Is a scalar -measures “how fast an object is moving”
INSTANTANEOUS SPEED -the speed at any given instant in time
AVERAGE SPEED -the average of all instantaneous speed; found simply by a distance or time ratio. SPEED= distance/Time TIME= Distance/Time DISTAnce= Speed*Time
VELOCITY- is a vector
Refers to the rate at which an object changes its position
VELOCITY= displacement/time
MOTION- is a change in position with respect to a reference
ENERGY- capacity of matter to perform work as the result of its motion or its position in relation to force.
FORCE- a physical strength
ACCELERATION- measure of the change in velocity of a moving object
A= change in velocity/change in time
A= VF-V1//time
1. LAW OF ENERTIA- a body at rest will remain at rest. And a body of motion will continue moving.
FACTORS: Velocity and Mass
2. LAW OF ACCELERATION- need an acceleration and mass. FORMULA: MA
The acceleration of the body is directly proportional to the mass
3. LAW OF GRAVITATIONAL PULL
CHAPTER 8
Astronomical instruments - are used for the purpose of study, observation, or measurement of celestial objects in the science of astronomy.
Gnomon/ Sundial- a pointed vertical column of known height erected on a horizontal plane
- used primarily to show time,
- used to yield a variety of fundamental data
Armillary Sphere- a solar instrument, consisted of two bronze concentric rings, several feet in diameter, mounted in the plane of the meridian
- use for stellar observation
- to increase the precision of the results attained by the gnomon
- to increase observations to the sun and the star
Quadrant- a graduated quarter of a circle, the graduations from 0 - 90° are on the circumference
- used to measure angles up to 90°
- used to measure the altitude of celestial objects above the horizon.
Triquetrum- It consists of a vertical post to which two intersecting rods –measure angles with a better precision than the astrolabe