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Edible Rock Activity. Grade: Subject: Earth Science. Purpose: To introduce students to relative age dating. Objective: Students will understand the concept. 3 Relative AGE Before absolute dating of rocks was developed in the 20th century, geologists had to rely on relative age dating, which places geologic events in. General geology lab. Geotime_Lab_Key. 1Relative dating lab answer the difference between the age dating with the oldest. Shepherdstown is determined .
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Relative age dating lab activity
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What is exemplified by when determining the xenoliths you the questions in relative dating. It is recommended that students complete Procedure Set A and answer the associated Interpretation Questions correctly before proceeding to Set B.
The cards in Set B represent rock layers containing various fossils. For Set Byou may want to color code each organism type i. Sequencing the rock layers will show the students how paleontologists use fossils to give relative dates to rock strata.
Return to top To enhance this activity, have students match the fossil sketches to real fossils. The following is a list of fossils in the John Hanley Fossil Teaching Set that may be useful in this activity.
It may be useful to share with students after they have completed Set B and answered the Interpretation Questions. The first card in the sequence has "Card 1, Set A" in the lower left-hand corner and represents the bottom of the sequence. If the letters "T" and "C" represent fossils in the oldest rock layer, they are the oldest fossils, or the first fossils formed in the past for this sequence of rock layers.
Since this card has a common letter with the first card, it must go on top of the "TC" card. The fossils represented by the letters on this card are "younger" than the "T" or "C" fossils on the "TC" card which represents fossils in the oldest rock layer. Sequence the remaining cards by using the same process. When you finish, you should have a vertical stack of cards with the top card representing the youngest fossils of this rock sequence and the "TC" card at the bottom of the stack representing the oldest fossils.
Starting with the top card, the letters should be in order from youngest to oldest.
Relative Age Dating Activity. - ppt download
Please note that none of the letters in this sequence may be reversed and still be correct. The sequence must be exactly in the order as written. It is not uncommon to have students reverse the M and D for example and begin the sequence with DM because that is the way they are printed on the card. It is good at this time to remind them that these letters represent fossils in a rock layer and that one fossil next to another within a rock layer implies no particular sequencing; they both are approximately the same age as that particular rock layer.
The following question may help clarify this point. The fossils within rock layer OXD i.
- Relative Age Dating Activity.
- Relative age dating activity answers
Each card represents a particular rock layer with a collection of fossils that are found in that particular rock stratum. All of the fossils represented would be found in sedimentary rocks of marine origin.
Figure 2-A gives some background information on the individual fossils. The letters on the other cards have no significance to the sequencing procedure and should be ignored at this time. Find a rock layer that has at least one of the fossils you found in the oldest rock layer. This rock layer would be younger as indicated by the appearance of new fossils in the rock stratum.
Keep in mind that extinction is forever. Once an organism disappears from the sequence it cannot reappear later. Use this information to sequence the cards in a vertical stack of fossils in rock strata. Arrange them from oldest to youngest with the oldest layer on the bottom and the youngest on top.