The Sun
what are sunspots caused by?
areas of cool matter
Which is the largest object in our solar system?
what are the four seasons?
spring,summer,fall,winter
what is the moon made of?
the moon boasts a crust, mantle and core. Deep inside of its interior, the moon may have a solid iron core surrounded by a softer, somewhat molten liquid iron outer core. The outer core may extend as far out as 310 miles (500 km)
The spinning of the Earth on its axis that causes night and day.
rotate
what is a photosphere?
the luminous envelope of a star from which its light and heat radiate.
Which planet is closest to the sun?
mercury
The Earth's axis is tilted _____ degrees
23.5
how many people have been on the moon?
Twelve men walked on the Moon from 1969 to 1972
The sun and everything that revolves around it.
solar system
what is chromosphere?
a reddish gaseous layer immediately above the photosphere of the sun or another star which, together with the corona, constitutes its outer atmosphere.
A small rocky object orbiting the sun.
asteroid
The term equinox means....
equal amount of day light and equal amount of night
how does the moon stay in orbit?
The Moon stays in orbit because of the Earth's gravity.
The star at the center of our solar system
sun
how far away is the sun?
it is 93 million miles away
A natural satellite of a planet.
moon
What is the longest day of the year?
summer solstice
is there air on the moon?
The Moon does not have any air. That is why astronauts had to take tanks of air with them.
How are stars DIFFERENT from planets?
stars do not move
what is a solar flare
a brief eruption of intense high-energy radiation from the sun's surface, associated with sunspots and causing radio and magnetic disturbances on the earth.
A ball of ice and dust with a tail of gas and dust pointing away from the sun.
comet
Why do we experience the changing of the season on the earth?
tilt of the earth's axix
is moon a star?
The Moon is not a star. The Moon is more like a planet because it does not make its own light. However, it cannot be a planet either because it orbits the Earth.
How are planets and stars ALIKE?
Both look like points of light in the night sky