Name _____________________________
ANSWER KEY - Review for CCA#24
Station 1 – Rock Cycle
Is Diagram A correct? Explain why or why not.
Incorrect. Between Igneous and metamorphic rock should be heat and pressure.
Is Diagram B correct? Explain why or why not.
Correct.
Is Diagram C correct? Explain why or why not.
Incorrect. Between sedimentary and metamorphic rock should be heat and pressure.
Is Diagram D correct? Explain why or why not.
Incorrect. Between sediment and sedimentary rock should be deposition, compaction & cementation.
Station 2 – Mary and Emma’s Journey
1. Who traveled at a constant speed? Only Emma.
2. Where did Emma begin her journey? Emma started at 20 kilometers.
3. Where did Mary begin her journey? Mary started at 0 kilometers.
4. How far did Mary travel before she caught up to Emma? She traveled for 40 kilometers.
5. For how much time did Mary travel before she caught up with Emma? 25 minutes.
6. How far did the girls travel together? They traveled a total of 140 km.
7. Calculate Mary and Emma’s average speed. Show the numbers you are using.
Mary : 80 km/75 min = 1.1 km/min
Emma : 60 km/75 min = 0.8 km/min
Station 3 – Racing Pillbugs
1. Who won the race? Peter
2. Who traveled back home? Bobbie
3. What happened to Bobbie at around 9 seconds? He changed direction.
4. Predict the distance Billie will travel after 10 seconds. 50 meters
5. Who rested? Bobbie
Station 4 -Abundant elements
1. The most abundant element in the Earth’s atmosphere is - nitrogen
2. Looking at the data tables which data table is the element carbon found?
Argon & Others 1%
Most Abundant Elements in Humans
3. _Oxygen__________is the most abundant element in the Earth’s crust
while__Calcium_________________ is the least abundant.
4. What is the least abundant element found in the Earth’s ocean? sodium
5. Compete the graph for abundant elements in the Earth’s atmosphere.
Nitrogen
78%
Nitrogen 78%
Oxygen 21%
Argon and others 1%
Station 5 – Spring Scale Prediction
Oxygen
21%
16 N
Station 6 – Mineral Testing
Directions: Using the Mineral Identification Gizmo and the Mineral Key, identify
minerals A – D. Complete the data table below.
ANSWERS: Mineral A – Quartz, Mineral B – Feldspar, Mineral C – Gold, Mineral D - Calcite
What properties are most helpful in identifying minerals? Why?
Answers will vary. [In general, density and hardness are the most useful properties
for identifying minerals. Color and crystal shape are less useful.]
Station 7 – Pulleys
Directions: Using the object at the station, measure the amount of force required to
lift the object using a fixed pulley and a moveable pulley.
1. Use the spring scale to record the amount of force needed to lift the load.
Record the data in the table below.
4
Force required to lift the load without a pulley: ___________________ N
Type of Pulley System
Force require to lift the load (N)
Single Fixed Pulley
4N
Single Moveable Pulley
2N
2. Draw and label the diagram of the pulleys at the station.
Fixed Pulley
Moveable Pulley
3. How did the pulleys help us to lift the load?
Fixed pulley- A fixed pulley does not change the amount of force needed
to lift a load, but the direction of the force changes.
Moveable pulley – A moveable pulley decreases the amount of force
needed to lift the load.
4. What happened to the force required to lift the load as more pulleys were
added to the system? The more pulleys, the less force needed to lift a
load.
Station 8 – Bar Graph Interpretation
1. What does the graph show? Glasses of lemonade sold in the cafeteria each month
2. What is the independent variable? Month
3. What is the dependent variable? Glasses of lemonade sold
4. What is the trend shown in the graph? Sales are high during Sept/Oct, start to
decrease in Dec/Feb, increase, then decrease in June
5. Make an inference about why so many glasses of lemonade were sold in May?
Weather is warmer, so people want to drink cool and refreshing drinks