Astronomy Flashcards

1
Q

The earth rotates on its axis how many times in 24 hours?

A

once every 24 hours

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2
Q

In the Northern Hemisphere, where does the sun rise?

A

The East

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3
Q

In the Northern Hemisphere, where does the sun set?

A

The West

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4
Q

The earth’s axis tilits at how many degrees?

A

23.5 degrees

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5
Q

In the Northern Hemisphere, where do you face if you want to look at the sun?

A

South

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6
Q

What time is the sun highest in the sky?

A

12 noon

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7
Q

The longest day is June 21st. What is it called?

A

Summer solstice

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8
Q

The shortest day is Dec 21st. What is it called?

A

Winter solstice

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9
Q

What does the earth orbit?

A

The sun

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10
Q

How long does it take for the earth to orbit the sun?

A

one year

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11
Q

When it is summer in the uk, what season is it in Australia?

A

Winter

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12
Q

When it is winter in the UK, how does the length of day and night compare?

A

Nights are longer than days

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13
Q

When it is winter in the UK, how does the length of day and night compare at the north pole?

A

It is dark for 24 hours

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14
Q

What season is it when the sun is lowest in the sky?

A

Winter

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15
Q

What season is it when the sun is highest in the sky?

A

Summer

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16
Q

When it is our summer, the Northern Hemisphere is tilted which way ?

A

Tilted towards the sun

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17
Q

When it is our winter the Northern Hemisphere is tilted which way?

A

Tilted away from the sun

18
Q

Why does our weather change every year?

A

the tilt of the earth’s axis changes

19
Q

What change does the Northern hemisphere’s tilt towards the sun, bring?

A

The sun’s energy is more concentrated, making the weather warmer.

20
Q

What change does the Nothern Hemisphere tilt away from the sun, bring?

A

The sun is less concentrated on the earth’s surface and the land and sea cool down.

21
Q

When is the spring equinox?

A

21st March

22
Q

When is autumn equinox?

A

21st September

23
Q

What do you call the map that can be used to find stars and consellations?

A

Planisphere

24
Q

Constellations are real. True or False.

25
What is the purpose of constellations?
Help us tell which stars are which. Break the sky into more manageable bits.
26
Why did people invent constellations thousands of years ago?
To tell the moths and to help with farming seasons.
27
What is astrology?
The idea that the current sign of the zodiac affects how things go in their everyday lives.
28
Why is Astronomy not Astrology?
Astronomy is a a scientific study of everything in outer space. Astronomers know that stars many light years away have no effect on the ordinary activities of humans on earth.
29
Where did the ancient Greeks believe the earth to be?
At the centre of the universe.
30
What was the name of this model that put the earth at the centre of the universe?
Geocentric model
31
How did the new Heliocentric model differ?
it put the sun at the centre of the universe, with everything going around the sun including the earth.
32
How did the heliocentric model explain the rising and setting of the sun?
The apparent movement of the sun is infact due to the rotation of the Earth on its axis.
33
Which is the largest planet?
Jupiter
34
Which is the smallest planet?
Mercury
35
Which is the coldest planet?
Neptune as it is furthest from the sun
36
How long does it take venus to orbit the sun?
225 days
37
Nol life has ben found on Venus. why would it be impossible for visitors to survive for long on the planet?
Temperature is too high. 462 degrees
38
How many earths would it take to fit across Jupiter?
11.2
39
Which planet orbits the sun in the shortest time?
Mercury
40
Which planet orbits the sun in the longest time?
Neptune