Ardrossan Academy Dead Earth

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Presentation transcript:

Ardrossan Academy Dead Earth Subtopic – SPACE – Earth, Moon & sun

I will be successful if I can : Lesson Title: Earth, Sun & Moon Learning Intention:. To understand the movement of the Earth and Moon around the Sun and the effects this causes Activity: Stellarium software I will be successful if I can : Explain how the Moon orbits the Earth as it orbits the Sun, causing the phases of the Moon and the changing seasons

DAY & NIGHT The Earth Rotates on its axis once every 24 hours The side facing the Sun is in daylight - DAY The side facing away is in darkness - NIGHT SUNLIGHT NIGHT DAY axis

SEASONS Earth’s axis is tilted In winter we are tilted away from the Sun short days, cold temperatures In summer we are tilted towards the Sun long days, warm temperatures

LONGEST DAY June 21st Summer Solstice Earth’s axis is tilted as far towards the Sun as it can be Sun does not set anywhere above the Arctic Circle Arctic circle

SHORTEST DAY December 21st Winter Solstice Earth’s axis is tilted as far away from the Sun as it can be Sun does not rise anywhere above the Arctic Circle Arctic circle

EQUAL DAY & NIGHT Two days have precisely 12 hours of day & 12 hours of night - EQUINOXES September 21st AUTUMNAL EQUINOX March 21st VERNAL EQUINOX

THE SUN The Sun is our nearest STAR It is at the centre of our SOLAR SYSTEM Earth is 160 million km from the Sun The Sun is the source of ALL the energy on the Earth

THE SUN We get energy from the Sun as - The Sun also emits - LIGHT HEAT (INFRA RED) The Sun also emits - ULTRA VIOLET (UV) RADIO WAVES X-RAYS GAMMA RAYS

THE SUN RADIO UV X-RAY Astronomers look at all of these waves to find out more about the sun and other stars.

THE MOON The Earth’s only natural satellite Orbits at a distance of 360,000 km Orbits every 28 days Does NOT give off light - it REFLECTS light from the Sun

THE MOON Our view of the moon changes during its orbit The PHASE of the moon depends on how much of the part of the moon we see is illuminated by the Sun

ECLIPSES Eclipses happen when the Sun, Moon and Earth line up There are two types of Eclipse - SOLAR ECLIPSE - Sun ‘disappears’ LUNAR ECLIPSE - Moon ‘disappears’

SOLAR ECLIPSE Earth passes into Moon’s shadow. Moon ‘blocks out’ the Sun Last happened Mar ‘15

LUNAR ECLIPSE Moon passes into Earth’s shadow Moon is ‘blocked out’ Happens several times a year