WARM-UP 85
The difference between relative dating and absolute
dating is that relative dating is a method of
sequencing events in the order in which they
happened. Absolute dating is a method of estimating
the age of a rock sample in years via radiometric
techniques.
WARM-UP # 86
Fill in greater > or less than to compare the geologic time units
Eons to Eras to Periods To Epochs
> Epochs
Eras > Periods
Epochs < Eons
Periods
> Periods
Eras > Epochs
Eras < Eons
Eons
WARM-UP # 87
1. Cast fossil
• F
2. Mold fossil
• D
3. Petrified fossil
• A
4. Preserved remains
• C
5. Carbon films
• G
6. Fossil
• B
7. Index fossil
• E
A. When minerals replace all or part of
an organisms tissues, such as bone or
wood.
B. The trace or remains of an organism
that lived long ago, most commonly
preserved in sedimentary rock.
C. When animals are preserved in or
close to their natural state as in amber,
tar, or ice.
D. An impression or imprint of an
organism in sediment which turns to
rock.
E. A fossil that is used to establish the
age of a rock layer
F. Formed when sediment fills an
impression made by an organism and
becomes rock.
G. Thin layer of carbon from the
organism left behind in the rock.
Warm-Up # 88
1. Superposition
– C
2. Absolute dating
– B
3. Relative dating
– A
4. Geologic column
– D
• A. Finding if a rock layer is
older or younger than the
layers around it.
• B. Finding the exact age of
an object using unstable
atoms
• C. The idea that younger
rock lies above older rock.
• D. Detailed series of rock
layers of all known fossils
and rock formations from
around the world.
Warm-Up # 89
1. Explain the four features of an index fossil.
–
–
–
–
Found worldwide
Abundant
Easily recognizable
Alive for only a short period of geologic time
Warm-Up # 90 – What are the 6
basic steps of the design process?
Warm-Up # 91 – What is a
constraint?
WARM-UP # 90
What are the 6 basic steps of the design
process?
1) Identify the Goal or Problem
2) Identify the Plan or Solution
3) Identify the Constraints
4) Design a Prototype
5) Evaluate the Prototype
6) Revise and Retest
Warm-Up # 91
What is a constraint?
•
•
•
•
A restriction
A limitation
Something that holds your project back
Example: “Lack of money has been a major
constraint on the building's design.
rd
3
June
Warm-Ups
Warm-Up # 94 – What is JPL?
Warm-Up # 95 – Why must
robotic spacecraft pave the
way for humans to go to Mars?
Warm-Up # 94 – What is JPL?
The Jet Propulsion Laboratory.
It is the lead U.S. center for
robotic exploration of the solar
system.
Warm-Up # 95 – Why must
robotic spacecraft pave the
way for humans to go to
Mars?
Robotic spacecraft must pave
the way for humans to go to
Mars because of the
difficulty and the number of
challenges getting there.
th
4
June
Warm-Ups
Warm-Up # 96 – What is a fly-by mission?
Warm-Up # 97 – What is a lander mission?
Warm-Up # 98 – What is an orbiter mission?
Warm-Up # 99 – What is Mars atmosphere
mostly made up of? What are two other
important components?
ANSWERS
Warm-Up # 96 – What is a fly-by mission? A spacecraft
passing close enough to a planet or moon to make detailed
observations without orbiting or landing.
Warm-Up # 97 – What is a lander mission? A spacecraft
designed to land on the moon or a planet.
Warm-Up # 98 – What is an orbiter? A spacecraft that
orbits a planet or moon without landing on it.
Warm-Up # 99 – What is Mars’ atmosphere mostly made
up of? What are two other important components? Mars’
atmosphere is mostly carbon dioxide. Water vapor and dust
are two other important components.
Warm-Up # 100 (aka #8)
What is the scientific method?
It is a simple method scientists use to conduct an
investigation.
It is a way to ask & answer scientific questions
by asking questions & conducting
experiments.