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What causes a crescent moon?
The moon changes shape as it orbits the Earth
Earth's shadow covers part of the moon
We can only see a small portion of the lit side of the moon
The moon is aligned with the Earth and Sun
Why are total solar eclipses rare events?
The moon's orbit is inclined with respect to Earth's orbit
The Earth's shadow rarely falls on the Sun
Most eclipses can not be seen from Earth
The moon is too close to block the Sun
What is the cause of Earth's season's?
Earth's elliptical orbit
Changes in solar energy
Earth's axial tilt
What bodies in our solar system have surface gravity?
Only the Sun
All the planets, moons, and the Sun
Only the inner planets
Only the outer planets
What are the main factors that determine an object's surface gravity?
The distance from the Sun
The material the objects is composed of
The shape of an objects orbit
The mass and radius of an object
To determine the scale of an image you should take the actual size of of the object and divide by the measurement of the object in an image.
What is criterion?
A set of standards to be judged
A set of judges to be criticized
A set of criticisms to be standardized
Which planet has the highest surface gravity in our solar system?
What determines an objects weight?
The upward pull that gravity exerts on the objects volume
The affect that the distance form a star has on an object
The the downward force that gravity exerts on the objects mass
What object(s) contains more than 99% of the mass in our Solar System?
The Asteroid Belt
Which planets are the outer planets?
Mercury, Venus, Earth, Mars
Saturn, Uranus, Neptune, Plute
Mars, Jupiter, Saturn, Neptune
Jupiter, Saturn, Uranus, Neptune
The farther a moon is from its planet, the shorter its orbital period.
What is the correct image scale for an image that covers a real life 25 Km but the photograph is 100 mm wide?
When does a lunar eclipse occur?
When the Earth's shadow is cast on the moon
When the moon's shadow is cast on Earth
When the moon's shadow is cast on the Sun
When the Sun's shadow is cast on Earth