What is the name of objects orbiting the sun that are made of gas and ice and produce tails during parts of their orbits.
Comet
How many planets in our solar system?
Eight
Which is closer to the Earth? Sun or the moon?
Moon (290,000 miles away)
Sun (93,000,000 miles away)
Are planetary orbits always perfect circles?
No, they are almost never perfect circles.
Mercury is closer to the Sun than Venus, but Venus is much hotter. Why?
Venus has an extremely thick atmosphere made mostly of Carbon Dioxide, causing a runaway greenhouse effect.
Kuiper Belt
X-rays have ________ wavelengths than radio waves.
Shorter
Approximately, how many miles in a light year?
6,000,000,000,000 (6 trillion)
What phase of life is our Sun in?
Main sequence
Which type of radiation is produced during supernova, neutron stars, and nuclear detonations?
Gamma Rays
The name of the "bubble" of space debris that orbits our sun up to one light year away.
Oort Cloud
__________ rays are responsible for sunburn and skin cancer.
Ultraviolet