Key Concepts
___ are very far away from Earth in every direction.
What are stars?
Earth pulls objects down towards the ground with the force of ____.
What is gravity?
What is the only star in our solar system?
What is the Sun?
___ can be seen only a few months at a time depending on the time of year.
What are Constellations?
The sun is the only star in our _____. Other stars are far outside our ______.
What is a solar system?
A(n) ____________ is a scientist who studies stars, planets, and other objects in the universe.
What is an astronomer?
How long it takes for Earth to complete one orbit around the sun.
What are 365 days or one year?
True or false: All stars in a constellation are the same distance away from Earth. That is why we see their shape in the sky.
What is false?
The sun looks bigger and brighter because it is much _____ to Earth than other stars.
What is closer?
The gravitationally bound group of objects that orbit the Sun, either directly or indirectly.
What is the solar system?
What is the Earth's position in its yearly orbit? (Key Concept)
Name 3 constellations you learned about.
What is any zodiac sign constellation, pegasus?
The sun is the only star we can see in the daytime because the sun looks so ______.
What is bright?
A(n) is an arrangement of stars as seen from Earth.
What is a constellation?
How many of the stars, visible in the night sky, are closer to Earth than the sun?
What is none?
What are the same date, and same stars?
Earth ____ once each day. We face the sun in ____, and we face away from the sun at _____.
What is spin, daytime, and nighttime?
Something we observe to be similar over and over again is a(n) _______________.
What is a pattern?
The Sun, Moon, and stars all appear to move across the sky because ___.
What is because Earth rotates around an axis?
True or False: Stars change which constellations they are in.
What is False?
Earth ____ the sun at the same time as it ____.
What are orbits and spins?
A ________ is something that scientists make to answer questions about the real world.
What is a model?
How long it takes for Earth to complete one spin.
What is 24 hours or one day?
Why are most constellations visible in the Northern Hemisphere but not in the southern hemisphere?
What is because Earth revolves around the sun?