Fall Semester Test Review
*Safety Procedures/Scientific Methods
*Chemistry
*Plate Tectonics
*Weather & Atmosphere
Safety Procedures/Scientific Methods
1. List several important safety rules for the science laboratory.
2. What units of measurement would be best to use when measuring the following:
a. the length of a pencil –
b. the mass of a penny –
c. the distance from Dallas to Houston, TX –
d. the amount of helium in a small balloon 3. List three things that may be evidence that a chemical reaction is occurring.
4. What can be determined by placing an object in water to see if it floats or sinks?
5. How could you separate each of the following:
a. salt and water
b. iron and sand
6. What is the formula for density?
7. Determine the density of an object that has a mass of 120g and displaces 15mL of water
when dropped into a graduated cylinder. ( Show your Work )
8. What are two methods we used to determine the volume of a solid object?
9. Name two different units that can be used to measure volume.
a.
b.
10. Explain how a chemical change is differentiated from a physical change.
11. Identify the following information about each element listed: symbol, atomic #, atomic
mass, valence #:
a. oxygen
b. nitrogen
c. fluorine
d. calcium
12. What does it mean to say that “atoms are not created or destroyed” in a chemical
reaction?
13. Can atoms that are not in the reactants end up in the products of a chemical reaction?
Why or why not?
14. Explain, in terms of making and breaking bonds, what it means for a reaction to be
endothermic.
15. Explain, in terms of making and breaking bonds, what it means for a reaction to be
exothermic.
16. If the products on the right side of the equation are Al​2​(SO​4​)​3​ + 3H​2, ​how many of the
following elements would be in the reactants:
a. aluminum
b. hydrogen
c. sulfur
d. oxygen
17. ​Is the following chemical equation balanced? If not, which elements are not balanced?
Fe​2​O​3​ + 3C
4Fe + CO​2
18. Explain the Theory of Continental Drift? Who proposed it?
19. Name three pieces of evidence that are used to prove the Theory of Continental Drift.
a.
b.
c.
20. Name the layers of the earth from the inside out and label each with the approximate
depth.
21. The word “lithosphere” is used to refer to which layers of the earth?
22. Explain the Theory of Plate Tectonics.
23. Name three pieces of evidence used to prove the Theory of Plate Tectonics.
24. Name three types of plate boundaries and the movement of the plates at those
boundaries.
a.
b.
c.
25. Define the term subduction zone.
26. How are weather and climate similar? How are they different?
Define the following terms:
a. precipitation –
b. climate –
c. weather –
d. meteorologist –
e. natural hazard –
f.
natural disaster –
g.
mean –
h. median –
i.
mode -
27. Name one natural hazard; give an example of how it might be a natural disaster;
describe two types of technology that humans use to reduce the impact of that hazard to
society.
Use the following graph to answer questions 29-32.
29. What is the average temperature of July?
30. What is the highest temperature reached in the year?
31. Which month had the highest rainfall?
32. How much rainfall did May have?