Moon Phases
What is a moon phase?
change in the appearance of the moon’s shape
What is a telescope?
a tool that uses lenses to make faraway objects appear closer and larger
In what YEAR was Neil Armstrong the first person to set foot on the moon.
1969
What is the Earth's AXIS?
an imaginary pole that runs through Earth’s center from the North Pole to the South pole
Earth’s rotation causes ____ and _______.
Day and Night
Who was the 1st person to walk on the moon?
Neil Armstrong
What is a space probe?
vehicles that move through space, but are controlled from Earth
What is the International Space Station?
a giant space lab orbiting Earth.
What is the Earth's ORBIT?
the path that Earth takes around the sun
Earth takes about _____ days to make one orbit around the sun.
365
The moon is a satellite that completes an orbit around Earth in how long?
About 1 month
Early astronomers believed ___________________.
that Earth was the center of the universe.
What telescope orbits Earth and takes pictures of faraway galaxies.
The Hubble Space Telescope,
What is a CONSTELLATION?
a group of stars that seems to form a pattern.
Earth’s ______ and the tilt of Earth’s ______ cause the seasons.
Orbit and Axis
True or False? The moon has air, wind, and water.
FALSE. The moon has NO air, wind, or liquid water.
The telescope, invented in the 1600s, let __________ and other astronomers observe objects in space.
Galileo
In 1976, _________ was the first space probe to successfully land on Mars.
Viking I
How often does the Earth rotate, or spin on its axis?
Once every 24 hours.
Earth is divided into halves called _____________. The upper half is the ________ __________; the lower half is the ____________ __________.
Hemispheres;
Northern Hemisphere;
Southern Hemisphere
How big is the moon compared to Earth?
The moon is only about one-fourth the size of Earth, but it looks large because it is close to Earth.
By the early 1600s, astronomers knew that
Earth revolved around the sun.
___________ are built and launched from the Kennedy Space Center in Florida.
Rockets
As it rotates, one side of Earth faces the ____ and has daytime.
sun
The part of Earth tilted toward the sun has ________. The part of Earth tilted away from the sun has ________.
Summer; Winter