Intro to Matter
What is the smallest unit of matter that retains the chemical properties of the element?
Atom
What is inertia?
Inertia is the tendency of an object to resist changes in motion or rest.
What are the 3 main states of matter?
Solid, Liquid, and Gas
When does winter officially start?
December 21st- the Winter Solstice
What year did the TV show Friends premiere?
1994
What is the formula for density?
density = mass/volume
What is the formula for finding speed?
speed = distance/time
When a gas turns into a liquid it's called __________.
condensation
How many sides/arms does a snowflake typically have?
6
What is the smallest country in the world?
Vatican City
Protons and neutrons are found in the ________ of an atom.
Nucleus
What is Newton's 3rd Law of Motion?
For every force there is an equal and opposite force.
Particles in a substance will move ___________ when thermal energy is removed.
slower
What color is a polar bear's fur?
Transparent! It's hollow- and the fur captures the light in a way that gives a white appearance.
How many bones does an adult human have?
206
What would the units be for density of hydrogen peroxide?
g/mL
What is the force needed to move an object with a mass of 20 kg at an acceleration of 2 m/s2?
40 Newtons
the TOTAL kinetic energy of all particles in a substance.
How thick does ice have to be to walk on safely?
4 inches
What is a group of kangaroos called?
A mob or a court
A 20g piece of silver has a density of 7 g/cm3. What would the density be of a 40g piece of silver?
7 g/cm3
Explain why the train station looks like it's moving to a person who is riding on the train.
Relative motion! Motion depends on the reference point you choose. If you are moving, it's going to seem as though other things around you are moving.
Going from a solid to a gas is called ____________
sublimation
What US city gets the most snow?
Valdez, Alaska
What do the initials GPS stand for?
Global Positioning System