Gravity and Motion
The attractive force between objects
What is gravity?
An object that orbits a star, is large enough to become rounded by its own gravity, and has cleared the area of its orbit
What is planet?
The partial or total blocking of one object in space by another.
What is an eclipse?
A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity.
What is a galaxy?
This amount of Earth's oxygen is produced by the Amazon rainforest.
What is 20%?
The tendency of an object to resist a change in motion
What is inertia?
Object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit
What is a dwarf planet?
During an eclipse, this is the darkest part of the shadow.
What is the umbra?
A star cluster that has a loose, disorganized appearance and contains no more than a few thousand stars.
What is an open cluster?
This acid is strong enough to dissolve stainless steel.
What is stomach acid?
The measure of force of gravity on an object
What is mass?
The planets of our solar system (in order)
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune
One of the different apparent shapes of the moon as seen from Earth
What are phases?
An enormously bright, distant galaxy with a giant black hole in the middle.
What is a quasar?
This is the only planet to spin clockwise.
What is Venus?
States every object in the universe attracts every other object
What is the law of universal gravitation?
These two planets do not have any natural moons or satellites.
What are Mercury and Venus?
This occurs at a full moon when Earth is directly between the moon and the sun.
What is a lunar eclipse?
A large, round, densely packed grouping of older stars.
What is a globular cluster?
The universe is made up of this many galaxies.
What is 50,000,000,000?
States that an object at rest will stay at rest and an object in motion, stays in motion with a constant speed unless acted on by a force
What is Newton's 1st law of motion?
Scientists theorize these materials were pulled together by gravity to form our solar system 4.6 billion years ago.
What are hydrogen, helium, rock and ice?
The phases of the moon. (in order)
What is new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, and waning crescent?
A binary star system in which one star periodically blocks the light from the other.
What is an eclipsing binary?
This insect has ears on its belly.
What is a grasshopper?