Earth and Space 1
What is a full moon?
When the moon appears to be a bright circle, it is in this phase.
What kind of instrument, developed by Leon Foucault, provides physical evidence that Earth is rotating on its axis?
Foucault pendulum.
What is the 2 Planet from the sun?
Venus
True or false: all constellations are visible from the Earth each night.
False
What is gravity?
The force that keeps the planets in their orbit
What is one day?
One rotation of Earth.
What is rotation on its axis?
Day and night are caused by this movement of the Earth
A sundial uses patterns of what to tell time?
shadows.
The planet that is closest to the sun
Mercury
what causes the moons phases
Orbit around the earth
Why do we have a leap year every four years?
The fact that Earth's orbit around the sun is about 365.25 days.
What is a galaxy made of?
Billions of stars, gas, and dust
When it is summer in the northern hemisphere what season is it in the southern hemisphere?
Winter
What are the seasons of the year?
These changes are caused by Earth’s tilt on its axis and its revolution around the sun.
What is an orbit?
Earth’s path around the sun
How long does it take the Earth to rotate on its axis?
24 hours.
What causes the length of shadows to change over the course of the day?
As the Sun moves across the sky, its angle changes, causing shadows to lengthen or shorten.
What is the solar system?
The sun, eight planets, and their moons, comets and asteroids
What is the sun?
The central star in our solar system.
Why does the sun appear to move across the sky?
Earth's Rotation
True or false: Earth’s orbit around the sun is what causes night and day.
False
List two observations that would lead you to believe that the Earth rotates on its axis.
a. The regular cycle of day and night.
b. The movement of stars across the night sky.
What are the inner planets?
Mercury, Venus, Earth and Mars
What are the outer planets?
Jupiter, Saturn, Uranus and Neptune
what planet is most like earth?
mars