Ch 1: Elements and Compounds
This kind of change does not change the chemical compound of the object and is reversible.
Physical change
Speed is defined as _______________/time.
distance
Name one way to make something dissolve faster.
Raise the temperature, break it into smaller pieces, stir the mixture
True or False: Pluto is classified as a planet
False. Pluto is a dwarf planet.
This type of plate boundary involves two plates moving towards each other
What is a convergent boundary?
Name an example of a chemical change.
Answers vary
_____________ forces do not cause a change in motion.
Balanced
This type of heat transfer occurs in a pot of boiling water when hot water rises to the top and colder water sinks
What is convection?
This is the belt of asteroids found outside the orbit of Neptune
What is the Kuiper Belt?
This is the semi-plastic layer of the Earth under the lithosphere that the continental plates float on
What is the asthenosphere?
How many atoms are in baking soda?
NaCHO3
6 atoms (1 sodium, 1 carbon, 1 hydrogen, 3 oxygen)
If an object is not moving, what will that section of the distance/time graph look like?
It will be flat
What contains more thermal energy, a cup of water at 25C or a bathtub full of water at 15C?
The bathtub
The time it takes for the Earth to move around the Sun is called the _____________ __ ______________.
Period of revolution.
According to the rule of superposition, what happens to the age of rock layers as you go deeper underground?
They get older
How can you increase the concentration of a solution? (Hint: there are two answers)
Add more solute or decrease the amount of solvent
What is the difference between speed and velocity?
Velocity includes direction
What color are hot things on a thermogram?
White, red, or yellow
This is the zone around stars where it is not too hot or cold for planets to have liquid water on their surface and they could possibly support life
What is the habitable zone?
This is the name of the zone where one tectonic plate goes under the other
What is the subduction zone?
How many hydrogen (H) atoms are in one molecule of ammonium phosphate?
(NH4)3PO4
12 hydrogen atoms
What is the average speed of an car that drove 120 miles in 3 hours?
40 miles per hour
This is the formula for converting Fahrenheit into Celsius
C = (F-32)5/9
How could you increase the gravity between two objects? (Hint: there are two answers)
Decrease the distance between the objects or make one or both of the objects more massive
This scientist came up with the theory of continental drift
Who is Alfred Wegener?