Flashcards
7th Gr, Science Unit 3 Flash Cards
Flashcards do conjunto (24)
- 1The paths that planets follow around the sun are calledorbits
- 2The shapes that the paths that planets follow around the sun areelliptical
- 3The spinning motion of a planet on its axisrotation
- 4The length of time a planet takes to make one complete turn on its axis represents what on that planet?a day
- 5The Greek scientist who first theorized that the sun and planets revolved around the earthAristotle
- 6Planets of our solar system orbit the ____________sun
- 7Telescopes that use lenses for focusing lightrefracting
- 8A spectroscope is designed to separate __________ into component colorslight
- 9Italian scientist that first used a telescope to study astronomyGalileo
- 10Distance light travels in a year is called ___________light year
- 11One complete rotation of a planet is equal to one _________ on that planetday
- 12Elements in the stars can be identified withspectroscope
- 13The astronomical unit, the light year, is a measure of ___________distance
- 14Invention of the telescope was important to the study of astronomy because....it helped man discover the nature of the heavenly bodies and their nature
- 15How does the diameter of the lenses of a telescope affect our ability to see stars?The larger the lens, the greater the magnification
- 16Why do we use special units to measure distances in space?Because distsances are so great it would be nearly impossible to work with such large numbers
- 17Contrast the methods of scientists in the days of Aristotle with those in the days of NewtonAristotle did not experiment and was interested in the why
Newton found experiments necessary to define the what and how - 18What are contributions of Galileo?1. First to use telescope
2. "Father of modern science"
3. Found evidence for heliocentric theory - 19What are contributions of Copernicus?First in modern times to promote the heliocentric theory
- 20What are contributions of Kepler?Wrote the laws of planetary motion
- 21What are the contributions of Newton?Published the law of universal gravitation
- 22What are the contributions Aristarchus?First to suggest that Earth orbited sun
- 233 motions in the sky that you can observe using only your senses1. motion of sun and moon across sky
2. motion against background of fixed stars
3. seasonal motion north and south from horizon - 24What are the major differences between the geocentric and heliocentric theories?Geocentric: earth at center, heavenly bodies, orbit earth
Heliocentric: sun at center, bodies orbit the sun
Informações
- Descrição
- Earth in Space Part 1
- Criado por
- Jenny Johnson · out 2020
- Atualizado
- 26 out 2020
- Visualizações
- 10
- Avaliação