1. What is relative humidity and how is it measured?

2. If a solid substance cube has 1.5Kg mass and a volume of 3.0 Liters, will it float when placed in water?

	a.	not enough information to determine
	b.	no
	c.	yes

3. P-waves are __________________________ and S-waves are _____________________. Based on the difference between P-waves and S-waves, the solid and liquid layers of the Earth can be mapped. _____________ are the type of waves that only can travel through solid layers, not fluid layers.

	a.	primary, secondary, s-waves
	b.	protowaves, seismic, p-waves
	c.	pressure, seismic, s-waves
	d.	pressure, structural, p-waves

4. A 25Kg book sits without moving on a flat table, the support force is ___________ and the net force is _____________ .

	a.	250N up, 0N
	b.	25N up, 0N
	c.	250N up, 250N down
	d.	0N, 25N down

5. If Jenny pushes a car East with a force of 75N, and the car has a 35N frictional force, what is the Net Force on the car (Magnitude and Direction)?

	a.	40 N West
	b.	40N East
	c.	- 40N East
	d.	110N East

6. Radioactive decay occurs in the __________ of an atom. One type of decay is ____________ decay which consists of ___________ .

	a.	nucleus, beta, electrons
	b.	nucleus, alpha, protons
	c.	nucleus, beta, protons
	d.	electron shell, alpha, helium atoms

7. Hydrocarbons are a type of _______________ compound, that have ______________ and _____________ .

	a.	organic, carbon, hydrogen
	b.	organic, metal, non-metal
	c.	organic, carbon, oxygen
	d.	ionic, hydrogen, carbon
	e.	ionic, a metal, non-metal
	f.	molecular, metal, non-metal

8. For the following chemical reaction, balance the chemical reaction equation:

______ Fe (s) + ______ O₂ (g) = ______ Fe₂O₃ (s)

	a.	2, 2, 2
	b.	1, 2, 1
	c.	2, 3, 2
	d.	4, 3, 2

9. The layers of the Earth have been identified by _____________ .

	a.	SONAR
	b.	seismic waves
	c.	deep core drilling
	d.	high-pressure structural analysis