Show:
Sun
Seasons, Tides & Eclipses
Rotation &
Revolution
Stars
Planets
100
Define Sunspot
What is areas of gas on the sun’s surface that are cooler than the gases around them?
100
Either of the two days of the year on which the sun reaches its greatest distance north or south of the equator
What is Solstice? summer – NH sun appears farthest north June 21, longest day NH shortest day SH winter – NH sun appears farthest south Dec 21
100
One complete revolution of Earth around the sun takes about:
What is one year?
100
Characteristics used to classify stars
What is size, brightness, and temperature?
100
Venus and Earth are much alike in terms of:
What is their size and density?
200
Define Prominence
What is huge reddish loops of gas that protrude from the sun’s surface linking parts of sunspot regions?
200
An equinox occurs when:
What is neither hemisphere is tilted toward or away from the sun? vernal – Mar 21 beginning of Spring NH fall/autumnal – Sep 22 beg. of fall NH
200
Earth’s rotation takes about:
What is 24 hours?
200
The lifetime of a star depends on its:
What is mass?
200
The smallest terrestrial planet.
What is Mercury?
300
The part of the sun where nuclear fusion occurs?
What is the core?
300
Tides are caused mainly by:
What is differences in how much the moon and the sun pull on different parts of Earth? spring – sun, moon, Earth nearly in a line during new moon neap – 1st Qtr. moon, line btw Earth & sun is at right angles to the line btw Earth & moon
300
Day and night are caused by:
What is Earth’s rotation on its axis?
300
The difference between apparent brightness (magnitude) & absolute brightness (luminosity)
What is M – brightness seen from Earth L – brightness seen from a standard distance from Earth
300
What is distinctive about Jupiter
What is the largest and most massive planet?
400
Define Solar flare
What is an eruption of gas from the sun’s surface that occurs when the loops in sunspot regions suddenly connect?
400
During what phase of the moon can a lunar eclipse occur?
What is full moon?
400
Earth has seasons because:
What is its axis is tilted as it moves around the sun?
400
The absolute brightness of a star depends on its:
What is size and temperature?
400
Uranus is different from most other planets because it:
What is it rotates on its side?
500
Define Convection zone
What is the outermost layer of the sun’s interior?
500
For a solar eclipse to occur, where are the sun, moon & Earth.
What is the moon must be directly between Earth and the sun?
500
Why we only see one side of the moon.
What is the moon’s rotation is equal to the rate at which it orbits or revolves around the Earth. So the far side is always facing away from Earth?
500
The Hertzsprung-Russell diagram shows that main-sequence stars:
What is increase in brightness as they increase in temperature?
500
Neptune is very similar in size and color to:
What is Uranus?