EARTH IN SPACE
YEAR 7 ESS
DAY AND NIGHT P347
An imaginary line called an ________ runs
through the Earth from the _________
pole to the ___________ pole.
The time taken for it to rotate once is
called it’s _______________.
On Earth it takes ______ hours for one
rotation.
THE YEAR P347
The Earth orbits around the ____________.
It takes __________________ days to complete
one revolution (complete orbit).
The time taken for a planet to complete an orbit of
its sun is called it’s ___________.
To make up for that ¼ day every 4 years on Earth
we have a L_______ Y________, with an extra
day on February 29th.
REVIEW QUESTIONS
Complete review Questions 1, 2, 7, 8, on pg 350
THE MOON
Earth’s moon orbits around planet
E___________.
It takes 27.3 days to complete one orbit.
GRAVITY
P336
There are non-contact forces between
objects called F________ F___________.
E.g. Magnets – magnetic force field
attracts metals (iron)
Around every mass (object) is a
g____________ force field that attracts
other masses.
This attractive force is called
G_____________.
GRAVITY
Every object that has mass and takes up space
has a gravitational attraction to other objects.
The LARGER the object/mass, the greater the
gravitational pull towards that object, thus
why we stay planted on Earth!
Think about the size of the moon and recall
any video of man walking on the moon? How
would you describe his motion? Why is it like
that?
TIDES P337
The m______ is the closest big mass (object) to Earth.
Its gravitational pull drags all the w_____ in the oceans and
seas towards it.
This causes a “bulge” (swelling) on the side of the Earth facing
the moon.
The same thing happens on the other side of Earth that faces
another large mass called the S_______!
These moving bulges cause the 2 high tides experienced every
day.
WORKSHEET
• Complete WS 8.4 Tides on pp.124-125
ECLIPSES
P.339-340
When the Sun, Moon and Earth line up together so the sun is blocked
from either the Earth or Moon an E____________ occurs.
Complete this table:
Eclipse
Description
Diagram of Earth,
Moon and Sun
Solar Eclipse
Lunar Eclipse
PRACTICAL
• Use a torch (Sun), a tennis ball (moon) and a basketball (Earth) to
simulate Solar and Lunar Eclipses.
PHASES
OF THE
MOON
P. 3 4 0
D R AW A D I AG R A M
T H AT E X P L A I N S
THE 8 PHASES OF
THE MOON IN A
LUNAR MONTH.
REVIEW
• Complete Review Questions 1, 2, 5, 8, on pg 343