Download Observations of Objects in Space

OBSERVATIONS OF
OBJECTS IN SPACE
HOW DO WE OBSERVE OBJECTS IN SPACE?
HOW DO WE OBSERVE OBJECTS IN
SPACE?
• Until January 7, 1610, people observed the night sky
using only their eyes.
• Galileo Galilei looked at the sky using a telescope.
• A telescope is an instrument that makes distant
objects seem larger and nearer.
WHAT ARE PLANETS?
• A solar system is a star and the objects that orbit
around it. In our solar system, there are eight planets
orbiting the Sun. A planet is a large object that
orbits the Sun.
• The inner planets are closer to the Sun than the
asteroid belt and have surfaces made of rock
(Mercury, Venus, Earth, and Mars).
• The outer planets are beyond the asteroid belt and
have surfaces made of gases (Jupiter, Saturn,
Uranus, and Neptune)
PLEASE ANSWER THE FOLLOWING
QUESTIONS WITH YOUR GROUP
• How do the surface materials of the inner and outer
planets differ?
• What other objects are in a solar system?
• Based on the given information where can you infer
the asteroid belt is?
LET’S COMPARE PLANETS…
• Jupiter__________________________________________________
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• Saturn__________________________________________________
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• Venus__________________________________________________
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• Mars__________________________________________________
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PLEASE ANSWER THE FOLLOWING
QUESTIONS WITH YOUR GROUP
• What could the fact that there are volcanoes on
Venus mean about the interior of the planet?
• How do winds form on Jupiter?
HOW DO THE MOONS COMPARE?
• A moon is a natural object that orbits a planet.
Different planets have different numbers and sizes
of moons.
• Moons are also called satellites. A satellite is an
object that circles around another object. Moons
are natural satellites, people also put objects into
space that orbit Earth or other planets. These are
called artificial satellites.
WHAT ARE ASTEROIDS, COMETS, AND
METEORS?
• A comet is a mixture of frozen gases, dust, ice, and
rock that moves in an elliptical orbit around the Sun.
Comets have three parts: coma, nucleus and
gaseous tail(s).
• An asteroid is a rock that revolves around the Sun.
• If an object crosses paths with Earth and enters
Earth’s atmosphere, it is called a meteor. When a
meteor lands on the ground, it is called a meteorite.
PLEASE ANSWER THE FOLLOWING
QUESTION WITH YOUR GROUP
• Draw the location of the tail and head of a comet
as it moves around the Sun.
ILLUSTRATION: