CDB review questions

CDB review questions

ATOMS

Atoms consist of subatomic particles that include protons, electrons and neutrons. 

Protons- are positively charged. 

Neutrons- have no electrical charge (neutral). 

Electrons are negatively charged. 

Open Ended

Atoms consist of subatomic particles that include protons, electrons and neutrons.

Protons- are ________ charged.

Neutrons- have no electrical charge (neutral).

Electrons are negatively charged.

Periodic table

• The number of protons determines the identity of the element.

• The atomic number is the number of protons in the nucleus of an atom.

Multiple Choice

The identity of the element in a atomic structure is determined by?

• Energy Levels

• Positive Charges

• Particles in the Nucleus

• Valence Electrons

How to Count atoms

SUBSCRIPTS only refer to the atom that they are BEHIND. For example…  H₂S

There are TWO atoms of HYDROGEN and only ONE atom of SULFUR.

How Many Atoms does the compound have in total?

• Al=

• S=

• O=

Multiple Choice

How many more atoms of hydrogen (H) than carbon (C) are present in the formula? CH₃(CH₂)₂₄COOH

• 45

• 29

• 26

• 35

Multiple Choice

A student added 5 grams of calcium chloride, a white solid substance, to 15 grams of water at 22°C. Several observations were made and the stdent inferred that a chemical reaction occurred.

Which observation best supports the student's inference that a chemical reaction occurred?

• The calcium chloride dissolved in the solution.

• The mass of the solution totals 20 grams.

• The temperature of the solution is 35°C

• The solution became lighter in color

Newtond 1st law

An object in motion stays in motion. An object at rest stays at rest

Newtons 2nd law

Newton's second law of motion is

F = ma, or force is equal to mass times acceleration.

Newton’s 3rd law

Newton’s third law states that whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object. 

Multiple Choice

A student is driving her car when an insect strikes her windshield. Which statement is correctly describes the forces in this situation?

• The insect exerts no force on the windshield, and the windshield strikes the insect with a large force

• The insect strikes the windshield with a small force, and the windshield strikes the insect with a large force.

• The insect strikes the windshield with the same force as the windshield strikes the insect.

• The insect strikes the windshield with a small force, and the windshield exerts no force on the insect.

Convection Currents

The heat from inside the Earth causes convection currents to form in the asthenosphere.

Where the convection currents rise, new material (magma) forces the plates apart.

Where the convection currents are sinking, the plates are moving together.

What mechanism causes the plates to move?

These convection currents in the mantle drag and pull the lithospheric plates above them.

Multiple Choice

A student draws the diagram below to represent the mechanism that moves the tectonic plates. What should the student label the circular arrows?

• Plates Diverging

• Plates Converging

• Mountain Ridge

• Convection Currents

Divergent Boundary

This is where the plates are

moving apart at spreading

centers (on the ocean floor).

NEW CRUST IS FORMED

These boundaries form 

mid-ocean ridges, such as 

underwater mountain 

ranges in oceanic crust.

Multiple Choice

Which describes what is happening along the mid Atlantic ridge?

• Rock material along the ridge is pushed below one plate and destroyed

• Magma moves up along the ridge to form new crust material

• Tides push soil up along the ridge to form underwater mountains

• Earthquakes along the ridge cause the sea floor to rise forming mountain ridges.

Convergent Boundary (C- C)

CONVERGENT BOUNDARIES – (3 Types)

This is where plates are moving toward each other.

Continental – Continental Crust                    

NO SUBDUCTION -  COLLISION ZONE

CRUST IS NOT DESTROYED

Convergent Boundary (C- O)

This is where an oceanic plate moves under a continental plate and sinks into the mantle as 

the plates converge. The action of the denser oceanic plate sinking under is referred to as subduction.

CRUST IS BEING DESTROYED

Multiple Choice

Which table shows the process, geological event and feature formed by the two plate boundaries, R and S, shown below?

Transform Boundary

Two tectonic plates grind past each other in a horizontal direction. This kind of boundary results in a fault 

The edges of the plates scrape against each other in a series of sudden spurts of motion felt as earthquakes

Multiple Choice

Which table represents a land feature or geologic process that occurs at each type of boundary pictured?

• Q= Volcano

  R= Folded Mountain

  S= Mid- Ocean Ridge

  T= Earthquake

• Q= Mid Ocean Ridge

  R= Volcano

  S= Folded Mountain

  T= Earthquake

• Q= Earthquake

  R= Mid Ocean Ridge

  S= Volcano

  T= Folded Mountain

• Q= Mid Ocean Ridge

  R= Volcano

  S= Earthquake

  T= Folded Mountain

Multiple Choice

Students ere asked to match plate boundaries and landforms based on the type of crust.

• Student 1

• Student 2

• Student 3

• Student 4