space
How far is the sun to earth
What is one astronomical unit?
Relativity is this equation
E=m c2
This is one of the type of atoms that carry a negative charge
Neutrons
This is used on a wheelbarrow
Wheel
This is pie
3.14159265 =pie
How big is Mars?
4220 miles
How many seconds from 14 feet up would it take to hit the ground?
0.78
This atom carries a positive charge
Protons
This is used along with the wheel on cars
Axle
SH
SH equals 2A plus D -1
How many moons does Neptune have?
14+
Plastic comes from this
Plastic tree
If one of these bump into an atom, what does it do?
Ghost atom
This is used in elevators
Pulley
I was used by Albert Einstein. What am I called?
The twin paradox
What is the average orbital speed of Venus?
22 miles per second
How many feet of extra rope do you need to lift a rope? That’s tied around the Earth one foot.
6.28 feet
This is the atom structure for water
H2O
I am used to get into hospitals
Ramp
I start with the letter R
R=d+n
What is the surface gravity on Mars?
0.38
What is the hardest thing in your house
Sand paper grans
Nuclear fusion creates
Helium
I am on a seesaw
Leavers
Abbreviation of helium
He