Earth, moon and sun

Axis

an imaginary line that an object rotates round

Rotation

the circular movement of an object around its axis

Day

a signle rotation of a planet around its axis

Rotational axis

the imaginery line that goes through the North and South pole, titlted to the side. The line that Earth rotates around daily

Orbital axis

The imagienary line that goes through the centre of the earth, directly top to bottom

Axial tilt

The difference in angle between the tilt, the direction never changes

Gravitational force

the force acting an objects with mass due to gravity

orbit

the curved path of an object to go around

Revoution

the completion of one full orbit, the circular ellipital movemnt of an object

equator

imaginary line that divdes earth into two hemispheres

solstice

the time of year the sun reaches the highest or lowest point in the sky

Equinox

the time of year when day and night are equal on length

Waxing

light increasing (Cresent, Gibbous)

Waning

light decreasing (Cresent, Gibbous)

Lunar eclipse

Moon drakens as it passes through earth’s shadow

solar eclipse

Moon moves between the earth and sun

Umbra

the inner region of a shadow where all light is blocked

prenumbra

The outer part of the shadow where light is only partially blocked

Luna cycle

the chagning of the moon’s phases as seen from Earth

Moon phases

the 8 possible portions of the moon seen from earth during the lunar cycle

blood moon

another word of a total lunar ecplise, when the sun is complelty in front of the moon

partial lunar eclipse

Sun is only partially infront of the moon

spring tide

when the sun,moon and earth are aligned and the combined effect of the sun and moons gravity creates very high and low tides

Neap tides

Sun moon and earth are at 90 degrees to each other, results in less variantion in tide heights

solar tide

tidal force exerted by the sun on earth’s ocean

Two tidal puldges

one facing the moon, another on earth’s opposite side

what amplifys tides

when the sun and moon align

tidal days

24hr and 50mins

high tides occurence

12hr and 25mins

low tides occurences

a little over 6 hours