Eyes
The black dot in the middle of your eye.
What is a pupil?
Fe stands for _______ on the periodic table.
What is iron?
_____________ was the first element on the periodic table.
What is phosphorous?
It takes _____ days for the Earth to fully orbit around the sun.
What is 365 days?
Earth's core is ________°F.
What is 10,800°F?
Eyes have ______ layers.
What is three?
Au stands for _____ on the periodic table.
What is gold?
Helium was discovered in ____.
What is 1868?
The third planet from the sun.
What is Earth?
True or False: there are 10 billion people inhabiting Earth.
The part of your eye with color is an ______.
What is an iris?
Pb stands for ______ on the periodic table.
What is lead?
___________ is the most recent element that was discovered.
What is ununpentium?
In 2006 ______ was no longer considered a planet.
What is Pluto?
Scientists believe Earth was formed with _________.
What is rocks and dust?
The _______ ______ is the nerve that connects your eye to your brain.
What is the optical nerve?
Hg stands for _______ on the periodic table.
What is mercury?
______________ discovered the first element.
Who is Henry Cavendish?
___________ is the closest planet to the sun.
What is Mercury?
What is 510 million miles?
Pupils get bigger if _________________.
What is no direct light in the eye?
There are ______ elements on the periodic table.
What is 118?
True or False: There is an element that is named after Albert Einstein.
What is true?
_________ is the planet that is farthest from the sun.
What is Neptune?
Earth is ___________ years old.
What is 4.54 billion years old?