The Sun: A Star in the Milky Galaxy
Describe the Milky Way Galaxy
The Milky Way Galaxy is a spiral galaxy that is made up of gas, dust, and newly formed stars. The stars in the Milky Way Galaxy range in size and age.
Identify the terrestrial (inner) planets
Mercury, Venus, Earth, and Mars
Which planet is closest to the Sun?
Mercury
Why does the moon appear different throughout?
The Moon rotates and revolves. As the moon moves around the Earth, we see different phases.
F.Y.I: The moon's rotation and revolution have the SAME period. That's why the same side of the Moon is ALWAYS facing Earth.
What causes day and night?
The tilt of Earth on its axis as it ROTATES.
How does temperature of a star affect its color?
Stars cooler than the Sun appear red or orange. Stars that look white or bluish- white are hotter than the Sun.
FYI: As stars age, they change in size and temperature.
Which planet is the CLOSEST in size to Earth?
Venus
Other than Earth, which planet is most likely capable of having living things survive?
Mars
What causes the appearance of a new moon?
When the moon is between the Sun and Earth, the little side is facing away from Earth.
How many hours in one day?
24 hours
What are some characteristics of the Sun?
The Sun is a middle age, medium-sized dwarf star.
It is the closest star to Earth.
It produces light and heat energy.
FYI: It is made up of hydrogen and helium
It's distance is measured in light years
How many days does it take the Earth to make 1 complete revolution around the Sun?
365 and 1/4 days
What do Terrestrial (inner) planets have in common?
They are smaller, closer to the Sun, have a rocky surface.
F.Y.I.
What is the direction of the rotation of the Moon around Earth?
The Moon rotates around the Earth from east to west.
How many degrees does the Earth tilt on its axis?
23 and 1/2 degrees
True or False. The Sun is located in center of the Milky Galaxy
False: The Sun is located on one spiral arms of the Milky Galaxy.
What do Jovian (outer) planets have in common?
They are large in size, farther from the Sun, take a longer time to orbit the Sun, have many moons, and are made of gases.
When does Earth experience winter?
When Earth's axis is titled away from the sun.
What causes the appearance of a FULL moon?
When Earth is between the Sun and the moon, the moon will look completely bright.
Identify the four seasons.
Winter, spring summer, and fall.
How does Earth benefit from the Sun?
The Sun warms Earth and provides light.
The Sun helps plants - photosynthesis
The Sun's gravity keeps the planets in our Solar System in orbit
The Sun Fuels the Water Cycle.
Which planet had been declassified as a dwarf planet?
Pluto
What are the motions (movements)that affect what we see in the night sky?
Rotation on its axis causes-day and night
Revolution - going around the Sun seasons.
What is another name for a quarter moon?
Half-moon
What causes the change in seasons?
The tilt of the Earth on its axis as it revolves around the Sun.