Name: __________________________
Week 5 Homework/Week 24 CCA Review
CCA is on Wednesday, February 25th
Density:
1. Calculate the density of an object that displaced 3 ml of water and has a mass of 72 grams.
2. Order the following objects from most dense to least dense:
Substance
Mass
A
5g
B
47g
C
27g
Volume
20mL
6mL
9mL
3. Calculate the density of the following object:
4. Brandon used a triple beam balance and determined that the mass of the rock shown was 274g. Use the image
below to determine the volume?
5. Calculate the density of the following materials and select if the material will sink or float in water (density of
water = 1.00g/mL)
6.
Substance
1
Mass
80g
Volume
10mL
2
30g
100mL
3
300g
100mL
Density
Sink/Float?
At a concert, Blake Shelton found an interesting rock on the ground. Out of curiousity he decided to run some
tests on it. During his experiment, he measured the mass to be 56 grams. When he put it in a graduated
cylinder, he found the following…
What is the volume of the rock? __________
What is the density? _______________
Name: __________________________
Minerals:
1. Why do scientists perform a scratch test?
2. Information on several minerals is given on the table below. If one were to observe samples of the minerals
from the table, which two would appear similar in color, but could be distinguished from one another using a
streak test?
Mineral
Color
Streak Color
Hematite
Black/Gray
Dark Red
Chalcopyrite
Yellow
Greenish black
Biotite
Yellow
White
Citrine
Yellow
White
Platinum
Gray
Gray
a. Hematite and alabandite
b. Citrine and chalcopyrite
c. Alabandite and chalcopyrite
d. Citrine and Biotite
3. Use the Mohs Hardness Scale below. Which mineral can scratch quartz, but is scratched by corundum.
ANSWER: ____________________________
Elements of Earth:
1. What is the most abundant element in Earth’s crust?
2. What element is most abundant in the Hydrosphere?
3. What is the most abundant element in the atmosphere?
4. What elements do the atmosphere and hydrosphere have in common?
5. What is the lithosphere?
6. What is the biosphere?
7. What is the hydrosphere?
8. What is the atmosphere?
Rock Cycle:
1. As a volcano erupts, it produces lava. As this lava flows, it cools down and hardens forming a rock. How could
you classify this rock? Answer: __________________________
Name: __________________________
2. Sometimes fossils can be found in sedimentary rocks. Which statement best explains why?
a. Heat and pressure from deep within Earth cause fossils to form
b. The remains of dead plants and animals settle to the bottom of the ocean or lake and are covered by
mud. Pressure eventually forms these layers into rock .
c. Lava may flow over an animal or plant, and as it cools and hardens, a fossilized rock is formed.
d. Larger rocks are slowly eroded away by the elements on Earth
3. A metamorphic rock can also be thought of as a rock that changes. What causes the rock to change?
a. Layers of sediment building up over time and pressing down forming rock.
b. Raind, wind, freezing, thawing, and plant roots growing cause the rock to erode away leaving behind
sediments.
c. Extreme heat and pressure from deep within Earth causes changes to the rock’s appearance, structure,
and composition.
d. The rock slowly changes over time into a new rock.
4. What is similar about igneous rock and metamorphic rock formation?
a. Their formation requires extreme heat.
c. they both look the same when formed
b. Their formation occurs deep underground.
D. both have layers
5. What is the primary process that turns sediments into sedimentary rocks?
a. Organisms walking on layers of sediment, pressing particles together tightly
b. Minerals within sediment, absorbing water, and undergoing a chemical reaction
c. Upper layers of sediment, pressing down on lower layers of deposited sediment
d. Magma cooling under the surface of Earth, crystallizing to form rock
6. Which of the following processes is one of the early steps in the formation of sedimentary rock?
a. Weathering of existing rock
b. Crystallization of molten minerals
c. Melting of rock in volcanoes
d. Chemical reactions that produce heat
7. How is the formation of metamorphic rocks different from the formation of igneous rocks?
a. ______________________________________________
8. Sedimentary rock can be changed into igneous if sediments are
a. Compacted
c. weathered
b. Depostited
d. melted
9. Igneous rock can be changed into sedimentary rock when igneous rocksa. That form in mountains get pushed together
b. are weathered and the fragments deposited
c. melt to form layers of different materials
d. put out by volcanoes create new land
Layers of Earth:
1. Why do Earth’s solid layers not sink into Earth’s liquid layers?
a.
The inner layers are hotter than the outer layers.
b.
The outer layers are hotter than the inner layers.
c.
The inner layers are less dense than the outer layers.
d.
The outer layers are less dense than the inner layers.
2. What is one limitation of this model?
a.
The layers of Earth are the wrong colors.
b.
The inner core and outer core are in the wrong places.
c.
The crust should be divided into two different layers.
d.
Each layer shown is the same size.
Name: __________________________
3. Where in the diagram below might you expect to find rocks with the least density? Explain…
______________________________________________
______________________________________________
______________________________________________
______________________________________________
4. Using the diagram from number 3, where would you expect to find the least dense layer?
________________________________________________________________________________________
5. Which of the following models would best represent the inner and outer core of Earth?
A. a metal ball in oil
B. jello on top of a cracker
C. a ball of clay filled with water
D. a rubber ball painted red
6. Oceans and other bodies of water are found on which layer of Earth?
________________________________________________________________________________________
7. Fill in the blank of the following statements using the work bank below:
inner core, mantle, lithosphere, asthenosphere, plasticity, outer core
The asthenosphere has _________________________, the characteristic that allows the layer to bend, flex, and
stretch such as playdoh.
The _________________________ is composed of iron and nickel in a liquid state.
The _________________________ contains molten material that moves due to large amount of heat inside
Earth.
The _________________________ is a thin, rocky layer that is broken into separate moving plates.
8. Earth’s crust would be best modeled by using a material that is –
a. Liquid and hot
c. Soft and flexible
b. Dense and smooth
d. Thin and solid
9. Which of Earth’s layers has the lowest density?
a. Crust
c. Mantle
b. Inner core
d. Outer Core
10. Which of the following best describes the position of the layer of earth know as the outer core?
a. Above the mantle, which is above the core
b. Above the core, below the mantle
c. Between the inner core and mantle
d. Below all other layers, including the mantle and core
11. Kody bit a peanut M&M in half and noticed that there was a colored candy layer, a thicker layer of chocolate
stuck to the colored layer, a mushier chocolate layer, and the solid peanut in the middle. She decided this would
NOT be a good model for the layers of Earth because it doesn’t properly show:
a. The order of the layer
b. The thickness of each layer
c. Which layers are solid
d. The outer core
12. Which layer of Earth is a dense solid from being packed together tightly?
a. Asthenosphere
c. Inner core
b. Crust
d. Lithosphere
13. Which layer of Earth is made of liquid metal?
a. Mantle
b. Crust
14. List Earth’s Layers from inside to outside.
c. Inner Core
d. Outer core
Name: __________________________