Chemistry
Symbol for helium
He
V stands for ____ measured by a _________
voltage, voltmeter
Mars is which type of planet?
Terrestrial
Recovery after an exploding volcano is which type of succession?
Primary
The ______ is unique to each element. It represents the number of ____
atomic number, protons
What is the unit of electrical power?
Watt
an astronomical unit is the same as the distance between which two celestial bodies?
Sun and earth
The atmosphere is mostly made of this gas
nitrogen
The subatomic particles and their charges are?
Proton + , electron (-), neutron, 0
A neutral object and a charged object touched together. Previously, the charged object was repelled by a negative object. The neutral object is now ___ charge.
negative
List the planets in order
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
What type of organism feed on dead and decaying matter?
decomposer and/or scavenger
What type of bonds will H2O have?
covalent/molecular
A heater pulls 10A at 120V. What is its resistance?
12 Ohms
What unit of measurement would be best for the diameter of the Milky Way?
light years
When DDT pesticide concentrations increase moving up a food chain, what term do we give this?
Biomagnification
How many electrons will be in a Carbon atom?
6
What type of circuit is made when you connect both sides of a battery, without a load?
short circuit
If you weigh 180 lbs on Earth, how much will you weigh on the moon?
30 lbs
What term is used to descrbe an ecosystems 'balance' unchainging until outside factors influence it?
Equilibrium/ Sustainable