What are the charge and location of each subatomic particle of an atom? Protons:__________
Neutrons: __________
Electrons: __________
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Which element has 12 protons?
Carbon (C)
Chromium (Cr)
Magnesium (Mg)
Zinc (Zn)
The image shows a roller coaster cart moving along a track. 📷
Which statement best describes the kinetic and potential energies of the cart at Location X compared with the kinetic and potential energies of the cart at Location Y?
The cart has more potential energy and less kinetic energy at Location X than it has at Location Y.
The cart has less potential energy and more kinetic energy at Location X than it has at Location Y.
Based on the diagram, which hemisphere is experiencing Summer?
Northern Hemisphere, Earth positioned on the left.
Southern Hemisphere, Earth positioned on the left.
Northern Hemisphere, Earth positioned on the right.
Southern Hemisphere, Earth positioned on the right.
An equation for a chemical reaction is shown:
NaOH+HCl→NaCl+H2O
Which statement provides evidence that mass is conserved in this chemical equation/reaction?
Two new substances are formed in the products.
Water is one of the products, but not one of the reactants.
Two hydrogen atoms are in the reactants, and two hydrogen atoms are in the products.
Which statement best compares the properties of silicon (Si) and nickel (Ni)?
Silicon is brittle, while nickel is malleable.
Silicon is ductile, while nickel is not ductile.
Silicon is a good conductor of electricity, while nickel is not.
The diagram shows different types of tectonic plate boundaries.
Which table accurately shows the surface features associated with each tectonic plate boundary?
Plate Boundary: 1
Surface Features: Volcanoes and oceanic ridges
Plate Boundary: 2
Surface Features: Trenches and continental rift valleys
Plate Boundary: 1
Surface Features: Oceanic ridges and continental rift valleys
Plate Boundary: 2
Surface Features: Trenches and volcanoes
A graph of an object’s motion during a 5-second time interval is shown.
Which statement correctly compares the object’s motion during the first 3 seconds and the last 2 seconds?
Both the speed and velocity change.
Both the speed and velocity stay the same.
The speed changes, but the velocity stays the same.
The chemical formula for methane is
CH4
Which statement would describe the number of atoms present if there were 4 molecules of this compound? HINT: Use a COEFFICIENT in front of compound.
Four molecules of methane would contain 1 atom of carbon and 4 atoms of hydrogen.
Four molecules of methane would contain 4 atoms of carbon and 1 atom of hydrogen.
Four molecules of methane would contain 4 atoms of carbon and 16 atoms of hydrogen.
A neutral atom has an atomic mass of 16 amu. Which particles make up most of the mass of this atom?
Protons and electrons
Protons and neutrons
Neutrons and electrons
Electrons only
An energy pyramid is shown. 📷 Which statement best describes the flow of energy through this pyramid?
Producers don't provide energy directly to the organisms in the trophic levels above them.
Primary consumers transfer energy to the trophic level above them and the trophic level below them.
Tertiary consumers do not receive all the energy from the trophic level below them, because some energy is lost to the environment.
The mass, applied force, and frictional force for four carts are shown:
PART A) Based on the data table, which cart has the lowest acceleration?
PART B) Which best explains the correct answer to Part A?
W
X
The cart will have the lowest acceleration if it has a larger mass and with greatest amount of force.
The cart will have the lowest acceleration if it has a smaller mass and with greatest amount of force.
The cart will have the lowest acceleration if it has a larger mass and has the least difference between its applied force and friction.
Which statement best compares the atoms of two elements that have similar chemical properties because they are in the same Group?
The atoms of both elements have the same number of neutrons.
The atoms of both elements have the same number of valence electrons.
The atoms of both elements have an equal number of energy levels.
A student is pushing two blocks on a smooth, frictionless surface.
What force is required in order to produce an acceleration of 2.5 m/s2on the two blocks combined mass shown?
12 N
30 N
50 N
75 N
This question has two parts. A student lists two land features:
Himalayas (mountain range)
(East African) Great Rift Valley
A) Which statement describes how each land feature most likely formed?
B) Which best explains Part A?
CHOOSE the TWO correct answers.
The Himalayas formed at convergent boundaries, while the Great Rift Valley formed at divergent boundaries.
The Himalayas and the Great Rift Valley both formed at divergent boundaries.
Tectonic plates are moving toward each other in areas that form mountains, while tectonic plates are sliding past each other in areas that form rift valleys.
Tectonic plates are moving toward each other in areas that form mountains, while tectonic plates are moving away from each other in areas that form rift valleys.
Ocean water absorbs carbon dioxide from the atmosphere. Carbon dioxide lowers the pH of the ocean water, making acidic which is harmful to organisms living in the ocean.
Which activity is most likely to decrease the amount of carbon dioxide being added to the ocean water?
Cutting down rain forests to use the land to farm crops
Constructing homes on farmland rather than on vacant lots in cities
Going to school in cars instead of riding the bus with other students
Using electrically powered devices instead of those powered by fossil fuels
Which statement correctly describes characteristics of organisms in a particular kingdom?
Unicellular, heterotrophic organisms that have a nucleus are members of Kingdom Bacteria.
Unicellular, autotrophic organisms that do not have a nucleus are members of Kingdom Fungi.
Multicellular, heterotrophic organisms that have a nucleus are members of Kingdom Animalia.
Which graph represents a baseball player acceleratingaway from a base located at the origin?
Matter can undergo physical or chemical changes. Which of these are examples of physical changes?
Select two correct answers.
Burning wood
Breaking an egg
Cooking an egg
Freezing a popsicle
Rusting iron
The table shows the motion data for two objects during two trials of an investigation.
Which object travels at the greater average speed?
Object 1, because it travels the greater distance per unit of time
Object 1, because it travels the longer amount of time
Object 2, because it travels the shorter amount of time
Object 2, because it travels the shorter distance per unit of time
Carts of different masses are pulled along a flat surface. Which two carts experience the same net force? JUST CALCULATE NET FORCE!!!!!!!!!!!!
Carts 1 and 2
Carts 1 and 3
Carts 2 and 3
Which best describes the cell shown?
Plant Cell with labelled mitochondria "power house' and vacuoles that store water and waste.
Animal Cell with labelled mitochondria "power house' and chloroplast.
Animal Cell with labelled mitochondria "power house' and vacuoles that store water and waste.
Which SAMPLES are metals? CHOOSE 3 CORRECT ANSWERS
Sample 1
Sample 2
Sample 3
Sample 4
Sample 5
Certain species of yeast can reproduce sexually or asexually. Which answer choice best compares the offspring from sexual reproduction to the offspring from asexual reproduction?
Offspring of sexual reproduction are larger than offspring of asexual reproduction.
Offspring of sexual reproduction are genetically different from either parent and offspring of asexual reproduction are identical to the parent.
Offspring of sexual reproduction have twice as much genetic material as the offspring of asexual reproduction.
A chemical equation for the reaction between calcium hydroxide, Ca(OH)2, and sulfuric acid, H2SO4, is shown.
The Law of Conservation of Mass state the amount of mass in the reactants should equal the amount of mass in the products. How many grams of sulfuric acid, H2SO4 were used in the reaction?
