Density
What is the formula for density?
D = M/V
Density= Mass divided by Volume
What is gold's chemical symbol
Au
The north pole of a magnet would attract what pole and rebel?
Attract the South, Repel the North
What is electricity?
The movement of electrons.
What is the difference between precision and accuracy?
b. If I hit 30 on the dart board 3 out of 4 times would that be precision or accuracy or both?
a. Precision is how often one gets the same/similar values, while accuracy is how close one gets to the "correct" value.
b. Precision
What happens to an object in water if it's less dense than water
it floats
What is an atom. Hint describe what is in it and their charges
Building block that makes up everything.
Electron- within the shell, negative charge
Proton- within the nucleus, positive charge
Neutron- within the nucleus, neutral charge
How can magnets be used to improve city life?
Trains, elevators, etc.
When the "magic wand" is lighting up, is the circuit open or closed?
Closed
True or False: Bees can only be yellow and black.
False
What will hit the floor first
a.) feather
b.) 5 pound weight
Both will hit at the same time
Where can we find the number of protons in an element? What is this number called?
The number of protons are found at the top right corner of the element on the periodic table. It is called the atomic number
Name a material that magnets can attract
Iron (will also accept nickel or cobalt)
What shape is similar to the word circuit and resembles a property of a circuit?
Circle
Complete the next number in Fibonacci's Sequence : 1,1,2,3,5 ,__
3+5 =8
What tool do scientists use to measure mass
Balance scale
Why are the noble gases (like helium and neon) all found in the last column of the periodic table, and why don’t they usually form compounds?
Because they have full outer electron shells, which makes them very stable. They don’t need to gain or lose electrons, so they rarely react with other elements.
What is one thing that would happen if the north and south poles of the Earth switched?
Weaken magnetic field of the Earth (more prone to meteoroids)
Who is on the 100 bill and made discoveries in electricity
Ben Franklin
How small is a tardigrade
range between 0.1 mm to 0.5mm
5 g/cm3
What does the atomic number tell you?
How many protons are in the atom
Magnets can attract some metals, but not all. Why don’t magnets attract materials like aluminum or gold?
Because those metals are not magnetic—they don't have the kind of atoms (like iron, nickel, or cobalt) that can be aligned by a magnetic field
How does a light switch work?
By flipping the switch the circuit goes from closed to open, stopping the flow of electrons.
Who invented the first battery by stacking layers of metal and cloth soaked in saltwater?
Alessandro Volta in 1800.