PLS HELP ASAP 30 POINTS THANKS Building Vocabulary
Fill in the blank to complete each statement. Delete the blank line, then enter and highlight your response in its place.

A scientific is a well-tested concept that explains a wide range of observations.

Breaks in Earth’s crust where rocks have slipped past each other are called .

A(n) is a deep valley on land that forms along a divergent boundary.

The geological theory that states that pieces of Earth’s crust are in constant,
slow motion is called .

Answer the following questions below using complete sentences and detailed responses.
Why do you think the author compared earth’s surface to a massive puzzle?

Crustal movements can be dangerous to humans. What evidence from the text supports this conclusion?

What are convection currents and how do they help form underwater mountains?

Explain two ways in which changes on the earth’s surface are connected to changes below the earth’s surface. Support your answer with evidence from the text.

Compare and contrast the three types of convergent boundaries. Include the types of crust involved and the results for each.

As for the other questions: hate to be rude, buddy, but you've got the text in front of you. Use that with your prior knowledge to reason this out. I'll give you hints, but you have to come up with the answer yourself. This is your work, not mine. If you don't do it, you learn nothing and only hurt yourself. You have done the classwork, not me. Put it to use.

Hint #1: puzzle pieces; crust pieces

Hint #2: Look at the text you have.

Hint #3: earthquakes, volcanoes, tsunami

Hint #4: continental = thick, oceanic = thin

Hint #5: continental-continental, oceanic-oceanic, continental-oceanic

I hope this helps you out! Have a marvelous day, 'kay?

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂