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  • The movements of the Earth
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      The movements of the Earth
      THE UNIVERSE - How many stars are there?
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      Are we moving?

      I will know

      • the relationship between the movements of the Earth and its daily and annual cycles.
      • what causes the seasons.
      • how to explain the apparent movement of the Sun in the sky throughout the year.

      Think


      Like the other planets in the Solar System, the Earth moves in two different ways: rotation on its axis, and revolution around the Sun.

      Both movements have important consequences.

      The movements of the Earth
      THE UNIVERSE - How many stars are there?
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      How does the Earth move?

       

      The movements of the Earth
      THE UNIVERSE - How many stars are there?
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      Imagine a line...

      The following terms help to understand these movements:

       
      Axis of rotation
      subtitulo

      An imaginary line that passes through the geographic North Pole and the geographic South Pole. These two poles do not coincide exactly with the magnetic poles on a compass.

       
      Equatorial plane
      subtitulo

      An imaginary plane that is perpendicular to the axis of rotation. It passes through the equator, which is the imaginary line that divides the Earth into the Northern and Southern Hemispheres.

       
      Ecliptic plane
      subtitulo

      An imaginary plane that contains the orbits of most objects orbiting the Sun, including the Earth. It passes through the centre of the Sun.

       

      The movements of the Earth
      THE UNIVERSE - How many stars are there?
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      Day and night

      The movements of the Earth
      THE UNIVERSE - How many stars are there?
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      Does the North Pole experience summer?

      /useruploads/ctx/a/145822676/r/s/38359106/ESPM000249341.mp4?idcurso=2417156
       ESPM

       

      Think


      The seasons are caused by the tilt of the axis of rotation as the Earth orbits the Sun.
       

      When does summer begin in Spain?

       

       

       
       
       
       
      The movements of the Earth
      THE UNIVERSE - How many stars are there?
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      The seasons

       

      The movements of the Earth
      THE UNIVERSE - How many stars are there?
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      When is the longest day of the year?

      Find out


      During the year, the Sun's rays strike the Earth at different angles.
      Look at the picture. Can you tell when is daylight longer in the Iberian Peninsula?

       During the summer solstice

      YES, that’s right!

      The Sun’s rays strike the Iberian Peninsula perpendicular to the ground.

      The period of daylight is longer.

       

       

      During the winter solstice

      NO, sorry.

      The Sun’s rays strike the Iberian Peninsula at an angle.

      The period of daylight is shorter.

       
      The movements of the Earth
      THE UNIVERSE - How many stars are there?
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      Does the Sun move?

      Language focus


      From the ground, it seems that the Sun orbits the Earth in an arc in the sky that begins at dawn and ends at dusk.
       

      What is the Midnight Sun?

       

      In some latitudes near the poles, the Sun never sets for several weeks during the summer.

      But in winter, it never rises at all for several weeks.

      The movements of the Earth
      THE UNIVERSE - How many stars are there?
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      The apparent movement of the Sun

       

      The movements of the Earth
      THE UNIVERSE - How many stars are there?
      Without background sound
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      The movements of the Earth

       Read and choose.

      • The Earth rotates towards the east.
      • Correct answer
        Wrong answer
      • The Sun and the Moon rise in the west and set in the east.
      • Correct answer
        Wrong answer
      • The Earth's rotation is responsible for the cycle of day and night.
      • Correct answer
        Wrong answer
      • The Earth's rotation causes the annual cycle of seasons.
      • Correct answer
        Wrong answer

      Done
      The movements of the Earth
      THE UNIVERSE - How many stars are there?
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      Now I know

       
      Rotation
      subtitulo

      The Earth takes 24 hours, one day, to complete one rotation on its axis.

      The rotation of the Earth is responsible for the cycle of day and night.

      The Earth rotates towards the east.

       
      Revolution
      subtitulo

      The Earth takes 365 days, one year, to complete one revolution in an orbit around the Sun.

      The revolution of the Earth is responsible for the annual cycle of seasons.

       
      The seasons
      subtitulo

      The equinoxes are the days when day and night are equal length: 12 hours.

      The solstices are the days when the difference in length between day and night is the greatest.

       

      The apparent movement of the Sun

      subtitulo

      The daily movement of the Sun is from east to west.

       

      Summary. The movements of the Earth 

      The movements of the Earth
      THE UNIVERSE - How many stars are there?
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      ASSESSMENT – The movements of the Earth

      Complete the sentences with the correct word.

      1. is the movement that causes the sequence of day and night.

      2. The Earth rotates around an imaginary line called .

      3. The Earth rotates towards the .

      4. The is the moment of the year when day and night are exactly the same lengths.

      5. The winter is the shortest day of the year in the Northern Hemisphere.

        equinox Rotation axis solstice east

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