What instrument did Galileo use to help make distant objects seem larger and nearer?
Telescope
How long does Earth complete one full rotation on its axis?
24 hours
What is a new moon?
When the Moon appears completely dark with no lit part visible from Earth
What are the inner planets mostly made of?
Rock
What is a galaxy?
A huge system of gas, dust, stars, and objects orbiting stars that is held together by the force of gravity
Who is the Italian astronomer and physicist who proved Copernicus’s theory that all the planets orbit the Sun?
Galileo
How long does it take Earth to complete one revolution around the Sun?
One year
Unlike the earth, the moon has no
atmosphere
What are the surfaces of the outer planets mostly made of?
Gases
What is a comet?
An object in the solar system that is a frozen mass of ice and dust?
Why does the Earth have different seasons?
Because of the tilt of Earth on its axis as it revolves around the sun
What affects the length of a day?
The tilt of Earth's axis
When the moon is directly between Earth and the sun, this is called a __________.
solar eclipse
Name the inner planets.
Mercury, Venus, Earth, Mars
What galaxy do we live in?
Milky Way
The illustration shows an abundance of objects between the orbits of Mars and Jupiter. What are these objects?
Asteroids
What is equinox? What two months of the year does this occur?
When the Earth's axis is tilted neither toward nor away from the sun, resulting in a "nearly" equal amount of daylight and darkness at all latitudes.
March and September
What phase is the moon in when the lit part of the moon gets smaller?
Waning
What are the planets in order starting from the sun?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Name a constellation
Ursa major
Orion
Cancer
Who developed a sun centered system of planets?
Copernicus
What is solstice? What two months of the year does this occur?
The moment the earth's tilt toward or away from the sun is at a maximum. The sun appears at its highest elevation at noon in the summer, and the sun appears at its lowest elevation at noon in the winter.
December and June
If tonight's moon is a third quarter, what will it be in 7 days?
New moon
What must a planet have to support life?
Breathable atmosphere, liquid water, and nutrients
Which phase of the moon is shown?
Waxing crescent moon