Earth And Space Flashcards
(12 cards)
How long does it take earth to revolve around the sun
365 days
How long does the earth rotate on its own axis for?
24 hours
How are seasons caused
T s a c b t t o t e o i o a L a
The seasons are caused by the tilt of the Earth on its own axis.
What is opaque
S f b L t i a s L a i c p t s o
Shadows form because light travels in a straight line and it cannot pass through some objects. We say these objects are opaque.
What is luminous
S o s a t s, L, c, c-s a p g o t o L
Some objects such as the sun, lights, candles, computer screens and mobile phones give off their own light. These objects are luminous.
What is non-luminous
S o c o b s a t r L f L o sma L o t s h a
Some objects can only be seen as they reflect light from luminous objects such as lights or the sun. These objects such as the moon are non-luminous.
What is the penumbra
T s w s b a a a e i c t p
The shadow we see before and after an eclipse is called the penumbra.
What is totality
W t d i r
When total darkness is reached its called totality.
How does a lunar eclipse occur
A L e o w t e s b t s L f t m s
A lunar eclipse occurs when the Earth’s shadow blocks the suns light from the moon’s surface.
How does a solar eclipse occur
A s e o w t m t b t s a t e a b o t s L
A solar eclipse occurs when the moon travels between the sun and the Earth and blocks out the suns light
What is a lunar eclipse
A L e i w t m c n L b s f t e. I o o t s o a f m a t r
A lunar eclipse is where the moon can no longer be seen from the Earth. It occurs over the space of a few minutes and then reappears.
What is a solar eclipse
W t s g b o b t m a c n L b s f t e
When the sun gets blocked out by the moon and can no longer be seen from the Earth.
