Matter & Energy
Force, Motion, & Energy
Earth & Space
Organisms & Environments
Spiral Review
100
The nucleus of an atom is unique to its element because of which of the following?
A. Protons and neutrons in the nucleus are always equal in number.
B. The number of neutrons in the nucleus is equal to the number of electrons.
C. The mass and charge of the neutrons determines an element’s identity.
D. The number of protons in one atom of an element is always the same.
D. The number of protons in one atom of an element is always the same.
100
The diagram below shows a boat moving north in a river at 3 m/s while the current in the river moves south at 1 m/s.
How will the boat be affected if it enters a part of the river where the current is moving south at 2 m/s?
A. The boat will move slower in the same direction.
B. The boat will move faster in the same direction.
C. The boat will stop.
D. The boat will move to the west.
A. The boat will move slower in the same direction.
100
The Northern Hemisphere experiences the beginning of spring when Earth is in -
A. Position 1
B. Position 2
C. Position 3
D. Position 4
A. Position 1
100
Tropical rain forests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainability of an ecosystem?
A. The presence of more species with different adaptations makes it more likely that some organisms will survive an ecological disaster.
B. Greater genetic variation within species makes it more likely that some individuals will survive a disease outbreak.
C. The presence of a variety of herbivore species that can feed on a large number of different producer species helps ensure abundant prey for predators in the ecosystem.
D. All of the above
D. All of the above
100
The diagram above represents the phases of the moon. Position 1 represents the new moon. Positions 2 through 8 represent the phases of the moon that follow.
Which phase does position 4 represent?
A. waning crescent
B. waning gibbous
C. waxing crescent
D. waxing gibbous
D. waxing gibbous
200
Serotonin is a chemical substance that acts as a neurotransmitter (chemical messenger). It helps relay (transfer) messages in the human brain. The formula for one molecule of serotonin is shown below:
C10H12N2O
How many atoms in all (total) are in a molecule of serotonin?
25
200
An astronaut on a spacewalk outside his space station hits a golf ball into open space. According to Newton’s first law of motion, the law of inertia, if the forces acting on the golf ball remain balanced, then what will the ball do?
A. Eventually stop moving due to friction
B. Accelerate over time since there is no gravity
C. Slow down or change direction
D. Keep moving in a straight line at the same speed
D. Keep moving in a straight line at the same speed
200
Which of these is visible on Earth when the moon is in position X?
A. waning gibbous
B. waxing gibbous
C. waning crescent
D. waxing crescent
D. waxing crescent
200
Which of these factors has the greatest influence on how many Koala live in an area?
A. the amount of rainfall in the spring
B. the number of Eucalyptus trees available
C. the height and variety of fruit trees available
D. the type of grass available
B. the number of Eucalyptus trees available
200
Which table correctly describes the functions of the cell structures listed?
300
The model of the periodic table below shows the locations of four elements.
A student is asked to identify an element that is a shiny solid and conducts electricity. This element has 2 valence electrons and 3 energy levels. At which location on this periodic table would the element be found?
1
300
The diagram shows a truck making a sharp right turn.
Which of the following statements best describes the motion of the truck?
A. The truck is accelerating because its speed is increasing.
B. The truck is accelerating because its velocity is changing.
C. The truck is stationary because its speed is constant.
D. The truck is stationary because its velocity is constant.
B. The truck is accelerating because its velocity is changing.
300
The map below shows the locations of four active volcanoes in the Caribbean Sea.
What do these volcanoes indicate about plate tectonics in the region?
A. The volcanoes form an island arc, indicating a converging plate boundary.
B. The volcanoes form a line, indicating a diverging plate boundary.
C. Two plates are moving past each other, causing faulting and magma formation.
D. Two plates are moving apart, creating new seafloor.
A. The volcanoes form an island arc, indicating a converging plate boundary.
300
According to the food web above, which of the following animals preys on the bass?
A. mountain lion
B. turtle
C. sunfish
D. raccoon
D. raccoon
300
An environment becomes warmer and drier over many years. Which adaptation is MOST LIKELY to help plants survive this change?
A. bright flowers
B. stubby roots
C. waxy leaves
D. long stems
C. waxy leaves
400
A chemical reaction in which carbonic acid (H2CO3) is synthesized from two simpler compounds.
What mass of carbonic acid (H2CO3), to the nearest hundredth of a gram, is synthesized in this reaction?
26.78 g
400
A student uses a magnet to move a 0.025 kg metal ball. The magnet exerts a force of 5 N, which causes the ball to begin moving. What is the acceleration of the ball when it begins to move?
A. 200 m/s2
B. 5 m/s2
C. 125 m/s2
D. 5.025 m/s2
A. 200 m/s2
400
Which of these observations about Betelgeuse is most likely accurate?
A. Betelgeuse is brighter and hotter than the Sun
B. Betelgeuse is brighter and cooler than the Sun
C. Betelgeuse is dimmer and hotter than the Sun
D. Betelgeuse is dimmer and cooler than the Sun
B. Betelgeuse is brighter and cooler than the Sun
400
How is the amount of rainfall in an area influenced by plants and amount of soil moisture?
A.When there is little moisture in the soil, the stoma on the leaves of plants open widely and release moisture into the air. The moisture condenses and increases the chance for rainfall.
B. When there is a high amount of moisture in the soil, plant roots grow deeper in the soil and take in moisture. This reduces humidity and decreases the chances for rainfall.
C. When there is a high amount of moisture in the soil, plants release a large amount of moisture through transpiration. This, along with evaporation from the soil, increases the chances for rainfall.
D. When there is little moisture in the soil, the rate of evaporation and condensation increase. This increases the amount of moisture in the air and increases the chance for rainfall.
C. When there is a high amount of moisture in the soil, plants release a large amount of moisture through transpiration. This, along with evaporation from the soil, increases the chances for rainfall.
400
When Trevor jumps to the dock from his small boat, the boat dips into the water. This is an example of -
A. Newton's 1st law
B. Newton's 2nd law
C. Newton's 3rd law
D. the Universal Law of Gravitation
C. Newton's 3rd law
500
How many neutrons are found in an atom of cadmium that has a mass number of 112?
*Hint - Use your periodic table!
64
500
An archer shot a 0.06 kg arrow at a target with 300 Newtons of Force. The arrow reached a speed of 50.0 m/s as it left the bow.
What was the acceleration of the arrow?
5,000m/s2
500
The diagram below shows four consecutive moon phases.
Which of the following diagrams shows the next four moon phases in the correct order?
500
A company has purchased 15,000 acres of forest. The loggers harvest mature trees in order to supply lumber for new homes.
According to the graph, what species has been most affected by the removal of the mature trees?
A. spotted owls
B. grey squirrels
C. holly ferns
D. hawk
C. holly ferns
500
A drag racing car’s engine produces 12,000 Newtons of thrust, pushing the car forward down the track. Frictional forces resist the forward motion of the car with a total backward force of 2010 Newtons. If the mass of the car is 820 kg, what is the acceleration of the vehicle? Round your answer to the nearest tenth.
A.17.1 meters per second per second
B.14.6 meters per second per second
C.12.2 meters per second per second
D.2.45 meters per second per second
C. 12.2 meters per second per second