Matter
Rust is an example of what type of change? Chemical or Physical
Chemical
Which of the following is not energy?
light, sound, air, electricity
air
Energy that moves from object to object is _______.
Transferred or transformed
The Earth subsystem that includes the air we breathe
atmosphere
This type of front produces large thunderstorms
Cold Front
Water (H20) is an example of:
A: element
B: molecule
C: atom
B: molecule
Kinetic energy is the energy of __________.
Motion
What is the transfer of energy by touch called?
conduction
cryosphere
What percent of atmospheric gases is not nitrogen or oxygen?
1%
How many hydrogen atoms are in: C3H4N6
4
In fusion, nuclear energy is when nuclei ________
(join or split)
join
When thermal energy in an object increases, the kinetic energy of the particles _______
increases
What landform has high elevation and high relief?
Mountain
What is the third highest layer of the atmosphere?
Mesosphere
Which is an example of a solution:
salt water, mac and cheese, cake mix, vegetable soup
salt water
Chemical energy is a form of _______ energy
potential or kinetic
potential
Which kind of material is a good conductor?
a. foam
b. wood
c. steel
d. air
c. steel
What percent of Earth's fresh water supply is frozen?
70%
Which stage of the water cycle is when water vapor turns to liquid water?
Condensation
Solve: What is the density of an object that has a mass of 90g and a volume of 120ml?
Density = mass/volume
90/120=0.75g/ml
Solve: A woman is walking at .5 m/s. Her mass is 62kg. Calculate her kinetic energy
KE- 1/2xmassxspeed(squared)
.5x62x.5(squared)= 7.75J
Calculate: If the temperature is 297 degrees Kelvin, what is the temperature in Celcius?
K-273=C
297-273=24C
When you go swimming in a lake, what two spheres are interacting?
Biosphere and hydrosphere
Which of the following is NOT a weather instrument? (choose all that apply)
agrometer, anemometer, hygrometer, levometer, therometer, psychrometer
agrometer, levometer, and therometer