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(A) model and illustrate how the tilted Earth rotates on its axis, causing day and night, and
revolves around the Sun causing changes in seasons;
(B) demonstrate and predict the sequence of events in the lunar cycle; and
(C) relate the position of the Moon and Sun to their effect on ocean tides.
(8) Earth and space. The student knows characteristics of the universe. The student is expected to:
(A) describe components of the universe, including stars, nebulae, and galaxies, and use models
such as the Herztsprung-Russell diagram for classification;
(B) recognize that the Sun is a medium-sized star near the edge of a disc-shaped galaxy of stars
and that the Sun is many thousands of times closer to Earth than any other star;
(C) explore how different wavelengths of the electromagnetic spectrum such as light and radio
waves are used to gain information about distances and properties of components in the universe;
(D) model and describe how light years are used to measure distances and sizes in the universe;
and
(E) research how scientific data are used as evidence to develop scientific theories to describe the
origin of the universe.
Astronomy
Astronomy
Which movement of the Earth causes
day and night?
What two things cause the Earth to
experience seasons?
Answer: The rotation of the Earth on its axis.
Answer: The tilt of the Earth on its axis, and the revolution
of Earth around the Sun.
Astronomy
Astronomy
Different wavelengths and frequencies
of radiation are called…
The tool that separates visible light into
different frequencies is called ___.
Answer: The Electromagnetic Spectrum
Answer: A Spectroscope
Astronomy
Analyzing a spectrogram of light from a
star can tell us…
Astronomy
Why do astronomers use different
types of electromagnetic radiation to
make space images?
Answer: What elements are present on the star.
Answer: Different types of electromagnetic radiation reveal
different information about space.
Astronomy
Astronomy
Microwaves, infrared, visible, gamma,
ultraviolet, radio all are part of the…
Electromagnetic evidence that the
universe formed in a Big Bang.
Answer: Electromagnetic spectrum
Answer: Red Shift
Astronomy
Astronomy
What is red shift?
What is a light-year?
Answer: When light is moving away, the waveslengths are
lengthened or shifted to the red end of the visible light
spectrum.
Answer: A measure of distance. It is the distance that light
travels in a year. It is how we measure distances between
objects in deep space.
Astronomy
Astronomy
How long does it take for the moon to
revolve around the Earth?
How long does it take for the moon to
change from new moon to first quarter?
Answer: 28 days, approximately one month.
Answer: About 1 week.
Astronomy
How long does it take for the moon to
change from new moon to full moon?
Answer: two weeks
Astronomy
What is a spring tide?
Answer: When there is a greater tidal range between high
tide and low tide.
Astronomy
What is a neap tide?
Answer: When there is a smaller tidal range between low
tide and high tide.
Astronomy
When does the earth experience spring
tide?
Answer: When the earth, sun and moon are lined up in a
straightish line. (Full moon and new moon)
Astronomy
When does the Earth experience neap
tide?
Astronomy
What causes ocean tides?
Answer: The gravity of the moon.
Answer: When the alignment of the earth, sun and moon is
at a 90 degree angle. (first and third quarter)
Astronomy
Astronomy
When the northern hemisphere is tilted
towards the sun (experiencing more
direct light), what season is the
northern hemisphere experiencing?
When the northern hemisphere is tilted
away from the sun (experiencing less
direct light), what season is the
northern hemisphere experiencing?
Answer: Summer
Answer winter
Astronomy
What is the tool that we use to
graph/classify stars called?
Answer: HR diagram/ Hertzsprung-Russel Diagram
Astronomy
This star can be described as an
average sized star, yellow in color,
average magnitude/brightness, and
average temperature in the main
sequence.
Answer: The Sun
Astronomy
Astronomy
On an HR diagram, we classify stars by What is the relationship between
these two things…
temperature and brightness of a main
sequence star?
Answer: Temperature and brightness (magnitude)
Answer: As the temperature increases, the
brightness/magnitude increases.
Astronomy
Astronomy
The Milky Way galaxy is what shape?
Three shapes of galaxies are:
Answer: Spiral Shaped Galaxy
Answer Spiral, elliptical, irregular
Astronomy
Astronomy
What is a nebula?
What is the star closest to Earth?
Answer: A large cloud of dust and gas in space. It is
where stars are born.
Answer: The Sun
Astronomy
Astronomy
How far away is the Earth from the
Sun?
Answer:
Answer: 149,600,000 km.