Al-Madinah
Sr.Sanam Chapter 6 Review Sheet
Science
READ THE INSTRUCTIONS OF EACH SECTION VERY CAREFULLY BEFORE YOU START.
- Boys your test will of total 20 marks. If you have any question email me through after subscribing me on the top of “files” on your class website. Good luck! I hope you prepare well.
Section 1
The first portion will be of 9 MCQ from the ones I have given you here below. Each will be on one point each. The purple italic colored are the correct answers.
1. What theory states that plates move around on the asthenosphere?
a) Continental drift
b) Seafloor spreading
c) Subduction
d) Plate tectonic
2. Which type of plate boundary is the Mid-Atlantic Ridge a part of?
a) Divergent b) transform c) divergent d) Subduction
3. What evidence are rocks supports the theory of seafloor spreading?
a) Subduction b) convergence c)magnetic reversals d)plate movement
4. Which layer of Earth contains the Astheno-Sphere?
a) Crust b) outer core c)mantle d)inner core
5. What type of plate boundary is the San Andreas Fault part of?
a) Subduction b) transform c) divergent d) convergent
6. Which of the following features is evidence that many continents were at one time near Earth’s South Pole?
A) Earthquakes b) glacial deposits c) volcanoes d) mid-ocean ridges
7. What hypothesis states that continents slowly moved to their present positions on Earth?
a) Erosion b) Subduction c)continental drift d) seafloor spreading
8. Alfred Wegner was a _____ meteorologist.
a) German b) Latin c) French d) American
9. Magnetic fields are detected by:
a) Barometer b) Scales c) Magnetometers d) Computers
10. Scientists clam that Earth’s magnetic field has never been reversed.
a) True b) False c) They have not determined it yet.
11. Pangaea means:
a) All land b) Part of land c) Breakage d) Breaking down
12. ______can collide, pull apart or move past one another.
a) Plates b) Layers c) Seafloor spreading d) Earth
Section 2
The second portion will be where you will have to match the vocabulary with the correct words. You will have to review the 7 words I have listed below but in your test you will have 5. Each will be on one point each.
Go over these Vocab words.
a) Continental drift (pg.150)
b) Plate Tectonics (pg. 158)
c) Converge (pg. 158 on left side where it says ‘review vocab’
d) Convection current (pg. 163)
e) Seafloor spreading (pg. 155)
f) Pangaea (pg. 150)
g) Continent (pg. 150 left side where it says ‘review vocab’)
Section 3
The 3rd and last section will be of short questions. I will give you 5 questions to prepare from but you will have 3 out of those 5 in your test.
1) Complete the concept map below about continental drift.
(I have given you answers. I will ask you to fill three of the four bottom bubbles.)
Continental Drift
Puzzle like
Fit of continents
2) What properties of Iron-bearing minerals on the seafloor support the theory of seafloor spreading?
(pg. 156) Magnetic reversals recorded in iron-bearing minerals show that new rock was formed at the ridges over time.
3) What happens when seismic energy is released as rocks in Earth’s crust break and move?
(pg. 164) When rocks in Earth’s crust break and move, energy is released in the form of seismic waves. Humans feel this energy as Earthquakes.
4) Explain what happens when plates collide?
(pg. 162 Read ‘where plates collide’. You should talk about subduction and should be able to summarize those two paragraphs in 4-5 sentences to explain the concept of what happens when plates collide.)
5) How does new seafloor form at mid-ocean ridges?
(pg. 155 Summarize the paragraph above the reading check on this page) Magma moves upward from the cracks as the seafloor spreads apart. It becomes solid s it cools and forms new seafloor. As new seafloor moves away from the mid-ocean ridge, it cools, contracts and becomes denser. This denser, colder seafloor sinks helping to from the ridge.