Flashcards
science astronomy test
Cards in this deck (34)
- 1does the sun or earth rotate? explainIn fact, the sun doesn’t move across the sky at all. It is the rotation of the Earth that makes it look like the sun is moving. The Earth rotates on its own axis, as do all the other planets.
- 2what is the angle of the axis?23.5%
- 3how long does it take to complete 1 rotation?24 hours
- 4how long does it take to complete 1 revolution?365 1/4 days
- 5when does the southern hemisphere experience summer?when it is tilted towards the sun in it's revolution.
- 6what is an orbit?the curved path of a celestial object or spacecraft about a star or planet, for example the path of the Earth around the sun or the moon around the Earth
- 7why is winter cooler then summer?the sun’s energy is spread out over a larger area.
- 8what are the seasons between summer and winter?autumn and spring
- 9how does the earth's tilt help? explainThe tilt of the Earth’s axis and its path around the sun help explain the seasons.
- 10when is your shadow at its longestYour shadow is at its longest on the shortest day of the year, the winter solstice, at midday. This happens in June.
- 11how is the moon visible?The moon is visible from Earth only because it reflects light from the sun.
- 12what is a full moon?the view of the moon seen from Earth when the whole of its near side is in sunlight. The shape seen is circular.
- 13what are phases?The different shapes of the moon that you see from Earth are called phases.
- 14does the moons shape vary? explainThe actual
appearance of the moon varies a little depending on where exactly in Australia you are - 15what is the period between a new moon and full moon?during the period between a new moon and a full moon, the moon is said to be waxing.
- 16what is waning?As the phases change between the full moon and the new moon, it is said to be waning .
- 17what is a lunar eclipse?it occurs when the Earth moves between the sun and the moon so that some or all of the moon’s surface does not receive light from the sun and cannot be seen
- 18do eclipses happen often?no
- 19what is a partial solar eclipse?A partial solar eclipse is experienced by areas in the partially dark part of the shadow
- 20what is an annular eclipseAn annular eclipse occurs when the moon blocks out the central part of the sun, leaving a ring (called an annulus) of light from the outer part of the sun, which is visible from Earth.
- 21how long is the moons phases?29 and 1/2 days
- 22draw a gibbous moongoogle the correct drawing
- 23draw and explain what a new moon isgoogle correct drawing
a new moon is where no sun light is rebounding off the moon, therefore you cannot clearly see it - 24draw a crescent moongoogle it
- 25draw and explain what a full moon isgoogle a full moon
a full moon is when all the light from the sun is rebounding off the moon so the whole moon is visible - 26what are tides?!the regular rise and fall of the oceans water level
- 27how long is a tide cycle6 to 12 hours
- 28where do oceans bulge?near the equator
- 29what causes the tide buldge to be different sizes?the sun and the moon
- 30how are tides causes?gravitational pull of the moon
- 31what happens when the earth rotatesdifferent places on earth experience high and low tides
- 32what are spring tidesa very high tide that occurs when there is a new or full moon
- 33why is the gravitational pull from moon bigger then the sunbecause it is closer then the sun
- 34qhat are neap tidesa weak high and low tide that occurs when the earth, moon and sun are not in the same line. the gravitational pull then worls against each other
Information
- Description
- HOW COME THEY GIVE YOU A TEST RIGHT BEFORE EXAMS LIKE WHAT GET A GRIP OXLEY
- Created by
- Tahlia Watt
- Views
- 8
- Rating