in which sequence are items listed from least
DESCRIPTION
S LAR SYSTEMTRANSCRIPT
In which sequence are items listed from least
total mass to greatest total mass?
(1) solar system, Milky Way, universe(2) Milky Way, solar system, universe(3) universe, Milky Way, solar system(4) Milky Way, universe, solar system
S LARSYSTEM
We revolve around (orbit) the sun.We know this because things in space look
differently at different times of the year, like...Seasons Constellations
The diagram here represents the
constellation Lyra.
Which statement best explains why Lyra is visible to an observer in New
York State at midnight in July but not visible at midnight in December?
(1) Earth spins on its axis.(2) Earth orbits the Sun.(3) Lyra spins on its axis.(4) Lyra orbits Earth.
When did the Solar system form?
4600 million years = 4,600,000,000 years = 4.6 x 106
years
Orbits result from motion of early solar system.
Terrestrial (inner) planets
Jovian (outer) planets
Asteroid belt
All planets orbit the sun
(and rotate) in the same direction.
In fact, moons orbit the
planets in the same
direction! Closer ones always orbit
faster.WHY?
Gravity is stronger when objects are closer.
More gravity
Less gravity
Which planet has a shorter
period of REVOLUTION,
the Earth or Mars?
How many times has Jupiter orbited the sun during YOUR lifetime?
the Earth
Notice any relationships?
If the average distance between Earth and theSun were doubled, what changes would occur inthe Sun’s gravitational pull on Earth and Earth’s
period of revolution?
(1) Gravitational pull would decrease and period of revolution would increase.(2) Gravitational pull would decrease and period of revolution would decrease.(3) Gravitational pull would increase and period of revolution would increase.(4) Gravitational pull would increase and period of revolution would decrease.
So, what about poor
Pluto…