Question 1

What is the problem or question being tested using the pendulum data above?

Accepted Answer

Will the mass of the pendulum affect the time it will take it to swing 20 times?

Answer

Nothing is being tested

Answer

Will the distance the string is pulled back affect the time it will take the pendulum to swing 20 times?

Answer

Will the length of the string affect the time it will take the pendulum to swing 20 times?

Question 2

What force caused the player to scrape his arm on the floor?

Accepted Answer

Friction

Answer

Gravity

Answer

Balanced Forces

Answer

Air resistance

Question 3

A student wanted to know if mass of a pendulum affects the time it takes to complete 20 swings, What type of investigation (descriptive, comparative, experimental) is this pendulum investigation?

Accepted Answer

Experimental, because it has an independent and dependent variable.

Answer

Comparative, because it is comparing the length of the string

Answer

Descriptive, because it describing the amount of time it takes to complete 20 swings.

Answer

Comparative, because it is comparing the mass of the pendulum

Question 4

What is sea-floor spreading and what type of boundary would you find here?

Accepted Answer

Sea floor spreading is where new sea floor forms, pushing existing rock in opposite directions. You would find a mid-ocean ridge at a divergent boundary

Answer

Sea floor spreading is where new sea floor is destroyed. You would find a mid-ocean ridge at a divergent boundary

Answer

Sea floor spreading is where a mid-ocean ridge is created at a convergent boundary under the ocean floor.

Answer

Sea floor spreading is where new sea floor forms, pushing existing rock in opposite directions. You would find a mid-ocean ridge at a convergent boundary

Question 5

Describe how the 3 types of plate boundaries form.

Accepted Answer

Convergent- a boundary in which two plates are coming together. Divergent- a boundary in which two plates are pulling away from each other. Transform- a boundary in which two plates are sliding horizontally past each other

Answer

Divergent- a boundary in which two plates are coming together. Transform- a boundary in which two plates are pulling away from each other. Convergent- boundary in which two plates are sliding horizontally past each other

Answer

Transform- a boundary in which two plates are coming together. Convergent - a boundary in which two plates are pulling away from each other. Divergent- boundary in which two plates are sliding horizontally past each other

Answer

Oceanic-Oceanic Convergent, Oceanic-Continental Convergent, Continental-Continental Convergent

Question 6

What is a chemical reaction?

Accepted Answer

The process in which atoms are rearranged to produce new substances; the bonds that hold atoms together may be formed or broken.

Answer

When two or more substances react and an unknown substance is created

Answer

When chemical bonds are broken and matter is lost or gained

Answer

only occur when an explosion takes place

Question 7

What type of compound forms when a metal bonds with a nonmetal?

Accepted Answer

ionic

Answer

covalent

Answer

complex

Answer

metallic

Question 8

How is helium different from the other noble gasses in group 18?

Accepted Answer

Helium has two valence electrons in its first and only energy level.

Answer

Helium has only 1 proton

Answer

Helium has a complete set of 8 valence electrons

Answer

Helium is a metal, while the rest of the noble gasses are nonmetals

Question 9

At which point(s) on the diagram above will the roller coaster have the least potential energy?

Accepted Answer

Position D

Answer

Position B

Answer

Position A

Answer

Position C

Question 10

What is weathering?

Accepted Answer

The process by which rock is broken down into smaller particles

Answer

The process that causes earthquakes and transform boundaries

Answer

The process in which rock, sediment, and soil are transported from one place to another

Answer

The process by which sediment is deposited in a new location

Question 11

What is an exothermic reaction? Endothermic?

Accepted Answer

Endothermic - a chemical reaction that requires an input of energy - energy is taken in during the reaction. Exothermic - a chemical reaction in which energy is released to the surroundings - energy is given off in several forms (light, heat, sound, etc)

Answer

Exothermic - a chemical reaction that requires an input of energy - energy is taken in during the reaction. Endothermic - a chemical reaction in which energy is released to the surroundings - energy is given off in several forms (light, heat, sound, etc)

Answer

Endothermic - a substance that slows down or stops a chemical reaction; Exothermic - a substance that speeds up the rate of a chemical reaction.

Answer

Neither substance causes any change to a chemical reaction

Question 12

How many elements are in the chemical formula NaOH? How many atoms are in this formula?

Accepted Answer

Elements - 3; Atoms - 3

Answer

Elements - 4; Atoms - 4

Answer

Elements - 3; Atoms - 1

Answer

Elements - 2; Atoms - 2

Question 13

What are valence electrons and why are they important?

Accepted Answer

Valence electrons are the electrons in the outermost energy level. They tell us the element's reactivity.

Answer

They are always equal to the number of protons and therefore identifies the element

Answer

They determine what the element is

Answer

They are the total number of electrons that an atom has and they determine where an atom is located on the periodic table

Question 14

Describe how the following are formed: folded mountains, fault-block mountains, volcanic mountains, subduction zones, mid-ocean ridges, trenches, and rift valleys.

Accepted Answer

Folded mountain- at a convergent boundary where two plates push together, Fault-block mountains- There large pieces of rock break due to tension at divergent boundaries, Volcanic mountains- When plates collide and one plate subducts under another, allowing magma to push up to the surface. Also at divergent boundaries at mid-ocean ridges, Subduction zone- at oceanic-oceanic or continental-oceanic convergent boundaries. The denser plate subducts, or goes under the less dense plate, Mid-Ocean Ridge- These are found at divergent boundaries where crust is pulled apart and sea-floor spreading is happening, Trenches- found at subduction zones as one plate goes under another, Rift Valleys- formed by divergent boundaries where crust is pulled apart forming shallow valleys

Answer

Convergent- a boundary in which two plates are coming together. Divergent- a boundary in which two plates are pulling away from each other. Transform- a boundary in which two plates are sliding horizontally past each other

Answer

all form at mid-ocean ridges

Answer

Wherever you find plate boundaries

Question 15

If an element has 3 valence electrons, what group is it in? What will its charge be when it reacts to form an ion?

Accepted Answer

Group 13; 3+

Answer

Group 3; 3+

Answer

Group 13; 13+

Answer

Group 13; 3-

Question 16

What does the atomic number of an atom represent?

Accepted Answer

The atomic number represents the number of protons in an atom

Answer

The atomic number represents the number of valence electrons in an atom

Answer

The atomic number represents the number of neutrons in an atom

Answer

The atomic number represents the number of energy levels in an atom

Question 17

Form and state a valid conclusion for this experiment based on the data in the table above. (Remember to refer directly to your hypothesis in you conclusion.)

Accepted Answer

The mass of the pendulum does not effect the completion time for 20 swings.

Answer

The mass of the pendulum does not effect the distance the string is pulled back.

Answer

The mass of the pendulum directly effects the completion time for 20 swings.

Answer

The length of the string does not effect the completion time for 20 swings.

Question 18

What was Tom doing during the 100 to 120 second interval?

Accepted Answer

He was at rest (not moving).

Answer

He was going back toward his house.

Answer

He was traveling at a constant speed.

Answer

He was traveling the fastest.

Question 19

Every morning Tom walks along a straight road from his home to a bus stop, a distance of 160 meters. The graph above shows his journey on a particular day. During which time interval did he walk the fastest? How do you know?

Accepted Answer

70-100 seconds...it is the steepest slope.

Answer

70-100 seconds...it is the most gradual slope.

Answer

50-70 seconds...it is the steepest slope.

Answer

0-50 seconds...it is the steepest slope.

Question 20

What does a straight line on a graph reflect?

Accepted Answer

No movement

Answer

Constant speed

Answer

Constant acceleration

Answer

No acceleration

Question 21

What are some examples of chemical reactions?

Accepted Answer

Leaves changing colors, striking a match, using a battery, taking a photograph with a film camera

Answer

Burning something, changing the size or shape of a material

Answer

Giving off energy, ice melting, producing steam

Answer

Cutting paper, adding food coloring to water, reheating food in a microwave

Question 22

What is a coefficient? How many atoms are in the formula 6P₂O₅?

Accepted Answer

A number that is placed in front of a chemical formula; it tells the number of molecules of a specific compound. P - 12, O - 30, Total - 42

Answer

A number that is written below and to the right of a chemical symbol; it tells the number of atoms of an element. P - 12, O - 30, Total - 42

Answer

A number that is placed in front of a chemical formula; it tells the number of molecules of a specific compound. P - 2, O - 5, Total - 7

Answer

A number that is placed below and to the right of a chemical formula; it tells the number of molecules of a specific compound. P - 12, O - 30, Total - 42

Question 23

What is a subscript?

Accepted Answer

numbers written below and to the right of chemical symbols; tell you how many of each type of atom are in a molecule.

Answer

numbers written before chemical symbols; tell you how many molecules of a compound

Answer

the number that tells you how many valence electrons

Answer

numbers written below and to the left of chemical symbols; tell you how many of each type of atom are in a molecule.

Question 24

An isotope of Boron-10 has 5 protons. How many proton, neutrons, and electrons would Boron-11 have?

Accepted Answer

5 P, 6 N, 5 E

Answer

11 P, 6 N, 11 E

Answer

6 P, 6 N, 6 E

Answer

5 P, 5 N, 5 E

Question 25

What is an isotope?

Accepted Answer

atoms of the same element that have different numbers of neutrons

Answer

atoms of different elements that have the same number of protons

Answer

atoms of the same element that have different numbers of protons

Answer

atoms of the same element that have different numbers of electrons

Question 26

At which point does the pendulum have the least potential energy?

Accepted Answer

At the lowest point, or Position 3

Answer

At the highest points, Positions 1 & 5

Answer

Position 4

Answer

Position 2

Question 27

What are Wegener's three pieces of evidence for continental drift?

Accepted Answer

Continents fit like a puzzle, similar rocks and fossils on different continents, and climatic evidence, such as coal deposits found in Antarctica

Answer

Ring of fire, similar fossil evident, mid-ocean ridges

Answer

transform boundary, convergent boundary, divergent boundary.

Answer

Earthquakes, size of continents, similar land forms

Question 28

What does the law of conservation of mass have to do with balancing equations?

Accepted Answer

When balancing chemical equations the reactants and products must contain the same number of atoms of each element.

Answer

elements are being created and destroyed in a chemical reaction

Answer

The mass of an atom changes when you balance and equation

Answer

Reactants and products never have the same number and type of element

Question 29

Two forces of 6N and 3N act upon an object in opposite directions. What is the new combined (net) force and direction of movement?

Accepted Answer

6N-3N = 3N left

Answer

6N-3N = 3N Right

Answer

6N + 3N = 9N left

Answer

6N + 3N = 9N Right

Question 30

What areas of Earth would you find earthquakes?

Accepted Answer

Wherever you find plate boundaries

Answer

Wherever continental drift occurs

Answer

Never at transform boundaries

Answer

at Convergent boundaries only

Question 31

What is the definition of an organic compound? What element will all organic compounds contain?

Accepted Answer

A covalent compound composed of carbon-based molecules; they must contain carbon and hydrogen; can contain oxygen, nitrogen, phosphorous and silicon.

Answer

compounds that do not contain any chemical substances like pesticides

Answer

A covalent compound composed of hydrogen-based molecules; they must contain nitrogen and hydrogen; can contain oxygen, nitrogen, phosphorous and silicon.

Answer

A covalent compound composed of oxygen-based molecules; they must contain carbon and oxygen

Question 32

What is the law of conservation of mass?

Accepted Answer

States that matter is neither created nor destroyed in ordinary physical and chemical changes.

Answer

Matter can be created or destroyed

Answer

Mass is equal to the number of protons an atom contains

Answer

Mass cannot be created nor destroyed

Question 33

What was Dalton's atomic theory?

Accepted Answer

All matter is made up of atoms, Atoms cannot be created, divided, or destroyed, All atoms of a certain element are identical but different from atoms of other elements, Atoms join with other atoms to make new substances

Answer

Protons and neutrons are located in the nucleus of an atom, while electrons are located in the electron cloud.

Answer

The atomic number represents the number of protons in an atom

Answer

Protons have a positive charge, neutrons are neutral, and electrons are negative

Question 34

The picture above shows a pulley moving a box. Which direction will the box move if a downward force is applied to the rope that is greater than the force of gravity on the box?

Accepted Answer

Up

Answer

Down

Answer

Right

Answer

It will not move

Question 35

Which car is traveling fastest?

Accepted Answer

Car A

Answer

Car C

Answer

Car D

Answer

Car B

Question 36

What are the characteristics of metals?

Accepted Answer

shiny, conducts heat and electricity well, most solid at room temperature, many are malleable, some are ductile

Answer

some are malleable and ductile, conduct only heat, brittle

Answer

conducts heat and electricity poorly, most liquid at room temperature, many are malleable, some are ductile

Answer

dull, brittle, they are not good conductors of heat and electricity

Question 37

What group of elements are Halogens most likely to combine with?

Accepted Answer

Group 1 since Halogens have 7 valence electrons and need only one more to be full.

Answer

Nobel gases and the Carbon family

Answer

They are not likely to combine with any other elements

Answer

metals

Question 38

A windmill sits quietly and still until it is hit with a gust of wind and begins turning. Explain how this is an example of Newton's first Law of Motion.

Accepted Answer

Newton's First Law states that and object in motion will remain in motion and an object at rest will remain at rest unless acted on by an unbalanced force. The windmill stays still until acted on by the unbalanced force of the wind.

Answer

Newton's 1st law does not apply to the windmill

Answer

Newton's 3rd law states that for every action there is an equal and opposite reaction. The wind pushes the windmill in one direction and it turns in the opposite direction

Answer

Newton's 2nd Law states that force = mass x acceleration

Question 39

What are the characteristics of nonmetals?

Accepted Answer

poor conductors of heat and electricity, often dull and brittle

Answer

Brittle, conducts heat and electricity well, most liquid at room temperature, many are malleable

Answer

shiny, conducts heat and electricity well, most solid at room temperature, many are malleable, some are ductile

Answer

very reactive

Question 40

Why do atoms in group 18 not react in nature?

Accepted Answer

They have a full outermost energy level.

Answer

They have 2 energy levels

Answer

They are all metals

Answer

They all have 18 valence electrons

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