MISC
1 Immediately after a forest fire, the primary consumers in the area will compete most for which biotic factor?
A Food
B Space
C Oxygen
D Sunlight
A Food
Ocean currents affect weather patterns by —
F regulating when tides occur in coastal areas
G trapping heat at the equator to regulate the global climate
H distributing heat from the uneven absorption of solar energy
J increasing the rate of evaporation to transport water to areas experiencing droughts
H distributing heat from the uneven absorption of solar energy
Students build a circuit. The circuit has wires that connect a battery to a switch and a fan.
Which energy transformations happen when the students close the circuit and the blades of the fan begin to spin?
F Chemical to mechanical to electrical
G Electrical to chemical to mechanical
H Chemical to electrical to mechanical
J Mechanical to electrical to chemical
H Chemical to electrical to mechanical
Which answer choice best explains the change from daytime to nighttime on Earth?
F The sun stops sending light to Earth at night.
G Earth moves farther away from the sun at night.
H The tilt of Earth causes less light to reach Earth at night.
J Earth rotates and causes different parts of Earth to experience night.
J Earth rotates and causes different parts of Earth to experience night.
Alpha Centauri appears as a bright object visible in the Milky Way galaxy. Alpha Centauri is actually a system of three objects. Each object produces light and rotates on its own axis. The system is an average of 4 light-years from Earth. Based on this information, the three objects that make up the Alpha Centauri system are all —
A asteroids
B comets
C planets
D stars
D stars
A student pushes a 51.5 kilogram bookshelf across a smooth floor with a net force of 67 N. What is the approximate acceleration of the bookshelf?
F 1.3 m/s2
G 3,450.5 m/s2
H 15.5 m/s2
J 0.77 m/s2
F 1.3 m/s2
Which statements correctly compare metals and nonmetals?
F Metals tend to be good conductors of thermal energy. Nonmetals tend to be good insulators of thermal energy.
G Metals are dull and brittle. Nonmetals are shiny and malleable.
H Metals are good insulators of electricity. Nonmetals tend to be good conductors of electricity.
J Metals cannot be stretched into thin wires. Nonmetals can be stretched into thin wires.
F Metals tend to be good conductors of thermal energy. Nonmetals tend to be good insulators of thermal energy.
Which statement best describes cell theory?
A Cells are part of complex organisms that work together to produce new cells.
B Cells perform a single life function, and most cells come from existing cells.
C Cells use energy from food to be able to perform life functions and work together to produce new cells.
D Cells are the basic unit of structure for all organisms, and all cells come from existing cells.
D Cells are the basic unit of structure for all organisms, and all cells come from existing cells
A toy truck is at rest on the floor. Which statement describes the forces acting on the toy truck?
A The forces are balanced so motion occurs.
B The forces are balanced so no motion occurs.
C The forces are unbalanced so motion occurs.
D The forces are unbalanced so no motion occurs.
B The forces are balanced so no motion occurs.
When a coin is tossed in the air, it travels upward, gradually slows down, momentarily reaches zero speed, then moves back downward with increasing speed. Which statement best explains this change in the coin’s motion?
F The force of gravity causes the coin to change its velocity.
G The coin’s inertia decreases on the way up and increases on the way down.
H The action-reaction force pair of gravity and the applied force cancel each other.
J The coin remains in its state of upward motion until the force of friction acts upon it.
F The force of gravity causes the coin to change its velocity.
Which pair of elements are nonmetals and gases at room temperature and normal atmospheric pressure?
F Fluorine, F, and chlorine, Cl
G Boron, B, and aluminum, Al
H Hydrogen, H, and cesium, Cs
J Cobalt, Co, and nickel, Ni
F Fluorine, F, and chlorine, Cl
Cell Organelles Observed
1 Vacuoles Nucleus Cell Membrane
2 Vacuoles Nucleus Chloroplast Cell Wall
Based on the organelles observed, the students determine that cell 2 is a plant cell because it has an organelle that —
A allows water to enter and exit the cell
B contains genetic information
C stores water and nutrients
D produces its own food
D produces its own food
Which pair of elements has reactivity that is similar to chlorine, Cl?
A Fluorine, F, and argon, Ar
B Fluorine, F, and iodine, I
C Sulfur, S, and bromine, Br
D Sulfur, S, and argon, Ar
B Fluorine, F, and iodine, I
One of the properties that makes copper, Cu, useful for household wiring is its ability to conduct electricity. Which other element is most likely to conduct electricity?
F Gold, Au
G Radon, Rn
H Bromine, Br
J Nitrogen, N
F Gold, Au
Which type of boundary results in the spreading of the oceanic ridge?
A Convergent boundary
B Subduction boundary
C Transform boundary
D Divergent boundary
D Divergent boundary
A farmer digs a small pond in a pasture. The farmer adds young individuals from two species of algae-eating fish to the pond and plants some reeds around the edges of the pond. The farmer wants the pond to be a sustainable ecosystem. Which of the following would be most helpful in increasing the pond ecosystem’s sustainability?
A Decreasing the number of plant species around the edges of the pond
B Introducing older fish of the same species into the population of algae-eating fish
C Having a greater diversity of living organisms in the pond
D Adding gravel between the water and where the reeds are planted
C Having a greater diversity of living organisms in the pond
Roller coasters are popular attractions at amusement parks. A cart on a roller coaster approaches the highest point on the coaster. As the cart reaches the top, it slows down. Which statement best describes the energy of the roller coaster as it slows down while traveling to the top of the coaster?
A The cart gains both kinetic and potential energy.
B The cart gains kinetic energy and loses potential energy.
C The cart loses kinetic energy and gains potential energy.
D The cart loses both kinetic and potential energy.
C The cart loses kinetic energy and gains potential energy.
Plants that live on the floors of densely populated forests must compete for sunlight. Which type of leaves are most likely found on plants that are best suited to living on the floor of a dense forest?
F Leaves that are needle-shaped
G Leaves that are smallest
H Leaves that store the greatest amount of water
J Leaves with the greatest amount of surface area
J Leaves with the greatest amount of surface area
Parus major is a bird species that depends on caterpillars as a food source for its young. Caterpillars are most abundant during spring. The yearly increase in temperatures during springtime has gradually shifted, resulting in caterpillars developing approximately two weeks earlier than in the past. How will the changes in the availability of caterpillars most likely affect future populations of P. major?
A P. major will change their food source to plant leaves.
B P. major will lay their eggs earlier in the year.
C P. major will decrease the number of eggs laid at a time.
D P. major will hunt caterpillars earlier in the day when temperatures are cooler.
B P. major will lay their eggs earlier in the year.
Sea anemones and clown fish live together in the ocean. Which statement best describes one way sea anemones depend on clown fish for an abiotic factor in an ecosystem?
F Clown fish protect sea anemones from predatory fish.
G Clown fish decrease competition among sea anemones.
H Clown fish consume the remains of organisms paralyzed by sea anemones.
J Clown fish move water near sea anemones when dissolved oxygen levels are low.
J Clown fish move water near sea anemones when dissolved oxygen levels are low.
How many neutrons are in the nucleus of a potassium atom with a mass number of 39?
20
The moon remains in orbit around Earth because of the force of —
F Earth’s rotation
G the moon’s rotation
H Earth’s gravity
J the sun’s gravity
H Earth’s gravity
Two solutions are mixed and react to produce the solid precipitate AgCl.
The chemical reaction is shown by the balanced chemical equation.
AgNO3 + NaCl → AgCl + NaNO3
What happens to the total mass as the reaction takes place?
A The mass increases.
B The mass decreases.
C The mass remains constant.
D The mass first decreases and then increases.
C The mass remains constant.
Farmers can best reduce negative effects on the water quality of nearby streams and lakes by planting crops that —
A produce less oxygen
B produce less carbon dioxide
C need less fertilizer
D need less solar energy
C need less fertilizer
If a fluorine atom has a mass number of 19, how many neutrons are in the atom?
10