7th grade practice for the chapter 10 test

Section 1 Self-Check Quiz

Section 2 Self-Check Quiz

Section 3 Self-Check Quiz

Chapter review quiz

Standardized test practice

Try the first part of the virtual lab.  Remember inside the nucleus when the DNA is being copied to make new DNA, the T-A pair up and the C-G pair up.  In this instance, you are trying to make mRNA, so the C-G are still pairing up, the T-A pair is still happening (from the DNA to the mRNA) but the A-T pair is changed to a A-U when mRNA is being created

7th grade practice for the chapter 9 test

Section 1 self check  I would say know questions ... 3-7, 9, 10
Section 2 self check I would say know questions ... 1-3, 5, 6
Section 3 self check I would say know questions ... 2-8
Chapter 3 Standardized practice test questions 2-5, 8-10
Chapter review quiz, questions 1-7 odd, 8-20

Planet distances from the sun & diameters

Reverse Mortgate calculator



convert time

Average planet distances from the sun
Planet diameters

planets Excel document

8th grade Chapter 9 test practice...

Section 1 practice quiz
Section 2 practice quiz
Section 3 practice quiz
Chapter 9 quiz
Chapter 9 practice test

Here are the answers for the Chapter 9 review found on pages 266-267 in your book...
10.  B
11.  C
12.  B
13.  D
14.  D
15.  C
16.  D
17.  D
18.  Decay can destroy organisms if they aren't buried fast enough.  Erosion destroys some rock layers.  Materials that have been buried very deep are often destroyed by metamorphosis.
19.  You could determine the absolute age of the lava, because it contains radioactive elements.  The relative age of the rocks above and below the lava flow can be determined.
20.  The volcanic ash would have been deposited very quickly (during one specific volcanic eruption).  Therefore you have a rock layer that you know is the same age everywhere.  This could also be dated using radioactive isotopes.
21.  The cold temperatures preserved the entire woolly mammoth.  This is similar to how freezing preserves foods. mmmmm woolly mammoth!

22.  The fossils that are trace fossils are:  dinosaur footprints, worm burrows, and fossil woodpecker holes.
       The fossils that are body fossils are: dinosaur skulls, insects trapped in amber, and fish teeth.
23.  I might make you draw a sketch of a disconformity or an angular unconformity.

There will most likely be a question or two related to the half-life lab that we did... as an example... how many half lives did the element go through if there is 25% of the original element and 75% of the daughter element present.