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Physics (Yr 10) > Astronomy > Flashcards

Astronomy Flashcards

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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.

A

False

25
Q

What is the purpose of constellations?

A

Help us tell which stars are which.
Break the sky into more manageable bits.

26
Q

Why did people invent constellations thousands of years ago?

A

To tell the moths and to help with farming seasons.

27
Q

What is astrology?

A

The idea that the current sign of the zodiac affects how things go in their everyday lives.

28
Q

Why is Astronomy not Astrology?

A

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
Q

Where did the ancient Greeks believe the earth to be?

A

At the centre of the universe.

30
Q

What was the name of this model that put the earth at the centre of the universe?

A

Geocentric model

31
Q

How did the new Heliocentric model differ?

A

it put the sun at the centre of the universe, with everything going around the sun including the earth.

32
Q

How did the heliocentric model explain the rising and setting of the sun?

A

The apparent movement of the sun is infact due to the rotation of the Earth on its axis.

33
Q

Which is the largest planet?

A

Jupiter

34
Q

Which is the smallest planet?

A

Mercury

35
Q

Which is the coldest planet?

A

Neptune as it is furthest from the sun

36
Q

How long does it take venus to orbit the sun?

A

225 days

37
Q

Nol life has ben found on Venus. why would it be impossible for visitors to survive for long on the planet?

A

Temperature is too high.
462 degrees

38
Q

How many earths would it take to fit across Jupiter?

A

11.2

39
Q

Which planet orbits the sun in the shortest time?

A

Mercury

40
Q

Which planet orbits the sun in the longest time?

A

Neptune

Physics (Yr 10) (3 decks)

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