|what is gravity?||Gravity is the force of attraction between masses. The bigger the mass, the more the gravity acting on it.|
|what is mass?||Mass is the amount of a substance or particles. It is measured in kilograms (kg)|
|what is weight?||Weight is the gravitational force acting on a mass. weight=mass x gravity|
|Is mass or weight constant?||Mass is considered a constant while, weight is not considered a constant.|
|can gravity affect tidal waves?||Gravity can affect tidal waves|
|what is the use of gravity in the solar system?||Gravity helps in keeping the solar system in a regualr motion. It also helps keep the earth and the other planets in a regular orbit around the sun|
|Can gravity change the direction and speed of a moving object?||Gravity can change the speed and direction of an object motion|
|Does gravity change with increasing mass of an object?||Heavy objects have more gravitational attraction (therefore attracting one another) than smaller objects|
|who proposed the kepler's laws?||Kepler's Laws were proposed by Johannes Kepler (1571 - 1630).He came from a poor German family.He Published Mysterium cosmographicum in 1597.|
|what was keplers contribution to cosmology?||Kepler marked the beginning of better approach to cosmology.|
|what was the tycho model of the heavens?||Tycho's model of the heavens had the planets orbiting around the sun, and the sun orbiting around the Earth.|
|what is the Tycho Brahe model show?||His model showed the Earth as the center of the universe.|
|How did Tycho Brache contribute to keplers work?||After his death, Kepler inherited his data and title as Imperial Mathematician to the Emperor Rudolf II.|
|what is kepler's first law?||It suggested that planets moved in elliptical orbitals with the sun at one focus of the ellipse.It went against major scientific thinking|
|what is the kepler's second law?||It suggested that a line from the sun to the planet sweeps out equal areas in equal times.|
|what did kepler's second law suggest about the speed of planetary motion?||Planets do not move at a constant speed.|
what is gravity?
what is mass?
what is weight?
Is mass or weight constant?
can gravity affect tidal waves?
what is the use of gravity in the solar system?
Can gravity change the direction and speed of a moving object?
Does gravity change with increasing mass of an object?
who proposed the kepler's laws?
what was keplers contribution to cosmology?
what was the tycho model of the heavens?
what is the Tycho Brahe model show?
How did Tycho Brache contribute to keplers work?
what is kepler's first law?
what is the kepler's second law?
what did kepler's second law suggest about the speed of planetary motion?