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Obj. 1Matter & Energy

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Obj. 2Force, Motion,

& Energy

Obj. 4Organisms &Environment

PotpourriObj. 3Earth & Space

Hodgepodge

Objective 1 for $100

B

The diagram below illustrates the basic structure of an atom. What is wrong with the diagram?

A. Neutrons should have a positive chargeB. Electrons are found outside the nucleusC. Protons should have a negative chargeD. Neutrons are not found in the nucleus

8.5A – Atomic Structure

Objective 1 for $200

C

8.5E – Chemical Changes

All of the following are indicators of a chemical change except -

A.Formation of a gasB.Change in temperatureC.Change in the state of matterD.Formation of a precipitate

Objective 1 for $300

D

Chlorine is added to some alcohol chemicals to make weed-killer. Some environmentalists have concerns about the pollution it causes. Using the periodic table, which chemical would you suspect might have similar properties and could possibly be substituted for chlorine?

A. MagnesiumB. CarbonC. ChromiumD. Bromine

8.5C – Interpret the Periodic Table

Objective 1 for $400

A

Which of the models best represents CaCO3?

8.5D – Recognizing Chemical Formulas

Objective 1 for $500

A

Some elements from the periodic table are listed in the chart.

Which of the elements is the least and most reactive?

A. Least Reactive: Neon; Most Reactive: HydrogenB. Least Reactive: Hydrogen; Most Reactive: CarbonC. Least Reactive: Carbon; Most Reactive: NeonD. Least Reactive: Nitrogen; Most Reactive: Hydrogen

8.5B – Properties of Elements

Objective 2 for $100

C

What do unbalanced forces do to an object when they act upon the object?

A. Unbalanced forces cause an object to maintain its state of motion

B. Unbalanced forces cause the net force of an object to be zero

C. Unbalanced forces cause an object to start moving, stop moving, or change directions

D. Unbalanced forces cause an object to maintain the same speed and the same direction

8.6A – Unbalanced Forces

Objective 2 for $200

D

 What is the difference between the speed of a moving object and its velocity?

A. The speed of a moving object never changes, but the velocity can change.

B. The velocity of a moving object never changes, but the speed can change.

C. The direction of motion must be specified for speed, but not for velocity.

D. The direction of motion must be specified for velocity, but not for speed.

8.6B – Speed, velocity, & acceleration

Objective 2 for $300

A

A. Move backward at a slower speed than the basketball moves forward

B. Travel the same distance as the basketball but in the opposite direction

C. Move backward at a faster speed than the basketball moves forward

D. Move with the same forward force as the basketball

A student sitting in a wheelchair at rest throws a basketball forward. Since the student and the wheelchair have greater mass than the basketball, the student and the wheelchair will -

8.6C – Newton’s Laws

Objective 2 for $400

A

The frog leaps from its resting position at the lake’s bank onto a lily pad. If the frog exerts a net force of 1.5 N and the acceleration of the leap is 3 m/s3, what is the mass of the frog?

A. 0.5 kgB. 1.5 kgC. 4.5 kgD. 45 kg

8.6C – Newton’s Laws

Objective 2 for $500

B

A toy car rests motionless on the floor. Jeff starts to move the car to the right with 1 newtons. At the same time, Owen begins pushing the car to the left with a force of 4 newtons. Which of the following best describes the resulting motion of the toy car?

A. It travels left at a constant speed.B. It travels left at an increasing speed.C. It travels right at a constant speed.D. It travels right at an increasing speed.

1 Newton 4 Newton

8.6A – Unbalanced Forces

Objective 3 for $100

A

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

8.9B – Plate Tectonics

Objective 3 for $200

C

Look at the new moon.

You can predict that the next phase in the lunar cycle will be -

A. First quarterB. Waxing gibbousC. Waxing crescentD. Full moon

8.7B – Lunar Cycle

Objective 3 for $300

D

Rigel, Polaris, and Betelgeuse are classified as supergiant stars. Based on the Hertzsprung-Russell diagram, what characteristics do these three stars have in common?

A. The three stars are located approximately the same distance from Earth.

B. The three stars have very high surface temperatures.

C. The three stars are newly formed stars.

D. The three stars are all very bright.

8.8A – Components of the Universe

Objective 3 for $400

A

Which pair of statements best describes Earth’s position relative to the sun in late March and in late September?

A. Neither end of Earth’s axis tilts toward the sun. Both the Northern and Southern Hemispheres receive the same amount of solar energy.

B. Both ends of the Earth’s axis tilt towards the sun. Both the Northern and Southern Hemispheres receive the same amount of solar energy.

C. The northern end of Earth’s axis tilts toward the sun. The Western Hemisphere receives more solar energy than does the Eastern Hemisphere.

D. The southern end of Earth’s axis tilts toward the sun. The Eastern Hemisphere receives more solar energy than does the Western Hemisphere.

8.7A – Seasons

Objective 3 for $500

C

Predict what would happen to Carver Creek after a heavy rainfall.

A. It will erode less soil than Cutter Creek.B. It will erode less soil than Sandy Creek.C. It will erode more soil than Sandy Creek.D. It will erode the same amount of soil as Sandy Creek.

8.9C – Topographic Maps

Objective 4 for $100

A

In a marine ecosystem, small fish must be able to swim away or hide from larger fish to avoid being eaten. Based on this information, for what biotic factor do small fish compete with other small fish?

A. Marine plant lifeB. Carbon dioxideC.OxygenD.Food

8.11B – Competition for Biotic/Abiotic Factors

Objective 4 for $200

D

Which of the following best describes a predator-prey relationship in the freshwater ecosystem?

A

B

C

D

8.11A – Relationships in an Ecosystem

Objective 4 for $300

C

A student investigates how grasshoppers are affected by an environment changing due to drought conditions. Based on the data, which statement best predicts how subsequent populations of the grasshoppers may be affected by the changing environment?

8.11C – Environmental Changes

A. The body size of the brown grasshopper will decrease.B. The population of green grasshoppers will increase.C. The population of brown grasshoppers will increase.D. The number of offspring of the green grasshoppers will

increase.

Objective 4 for $400

C

Oceans receive rainfall runoff from land surfaces. What is one way in which runoff from human activities impacts ocean systems?

A. Developed lands can increase the amount of runoff flowing into the ocean, changing the pattern of tides.

B. Developed lands can decrease the amount of runoff flowing into the ocean, lowering ocean levels.

C. Chemical fertilizers applied to agricultural land can enter ocean water in runoff, creating an overgrowth of some aquatic plants.

D. Oil and gasoline in runoff from roads can enter ocean waters, increasing the amount of fossil fuels recovered from drilling beneath the ocean floor.

8.11D – Human Impact

Objective 4 for $500

D

The walking catfish is a type of fish that inhabits many waterways in Florida. This catfish has a unique ability to survive out of water for short periods of time. The catfish has special organs that allow it to breather oxygen from the atmosphere, as well as spikes on its fins that allow it to “walk” awkwardly across dry land. Walking catfish have been seen walking across roads, on grass, and even on people’s driveways. What kind of environmental change most likely led to these unique adaptations in the walking catfish?

8.11C – Environmental Changes

A. As the population of predators in their environment increased, catfish with the breathing and walking traits were able to escape to a different waterway.

B. As the catfish food supply diminished, catfish with the breathing and walking traits moved on to land to hunt for land animals to eat.

C. As water temperatures increased, catfish with the breathing and walking traits left their environment to find relief in shaded areas.

D. As water in the environment began to dry up, catfish with the breathing and walking traits left their environment to find nearby waterways with more water.

Hodgepodge for $100

D

The graphs shows the motion of four different bicyclists during a one-hour bicycle ride. Based on the graph, which bicyclist traveled at a constant speed during the entire ride?

A. Bicyclist RB. Bicyclist SC. Bicyclist TD. Bicyclist U

6.8D – Graph Changes in Motion

Hodgepodge for $200

B

Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill?

6.8A – Potential & Kinetic Energy

A. Kinetic energy decreases and potential energy increases

B. Kinetic energy increases and potential energy decreases

C. Both potential energy and kinetic energy decreaseD. Both potential energy and kinetic energy increase

Hodgepodge for $300

B

Some common substances and their chemical formulas are listed in the chart. How many different elements are listed in the chart?

A. 4B. 5C.11D.13

6.5C – Elements & Compounds

Hodgepodge for $400

A

The diagram shows the steps necessary to produce the energy needed to run a hair dryer. As it moves from location A to location D what energy transformations occur?

A. chemical→thermal→mechanical→electricalB. electrical→thermal→mechanical→electricalC. thermal→electrical→chemical→mechanicalD. chemical→electrical→thermal→mechanical

6.9C – Energy Transformations

Hodgepodge for $500

A

The diagram shows two organisms. How are these two organisms classified?

A. same domain, different kingdomB. same domain, same kingdomC. different domain, same kingdomD. different domain, different kingdom

6.12D – Domains & Kingdoms

Potpourri for $100

B

Throughout history, humans bred horses to produce traits in the horses that met many different needs. For example, horses of the Middle Ages were bred to carry a heavily armored knight and its weapons into battle. What type of traits appeared in the horses of the Middle Ages as a result of selective breeding?

7.11C – Natural Selection & Selective Breeding

A. Small, light horsesB. Large, strong horsesC.Medium-sized fighting horsesD.Smart, nimble horses

Potpourri for $200

C

A student looks through a microscope to compare and contrast an animal and plant cell. He sees an organelle similar in both cells, as indicated by the arrow.

What is the name and function of this organelle?

7.12D – Structure & Function of Cells

A. Vacuole, which stores waste and food inside the cellB. Golgi body, which stores and transports proteinsC. Nucleus, which contains most of the cell’s genetic materialD. Lysosome, which stores enzymes created in the

endoplasmic reticulum

Potpourri for $300

D

An emergency medical technician performs CPR (cardiopulmonary resuscitation) on an unconscious person who is not breathing. Until help arrives, CPR performs the main functions of two organ systems in the unconscious person’s body. What are the two organ systems and their functions performed by CPR?

7.12B – Human Body Systems

A. Circulatory system moves air into the person’s lungs, and skeletal system keeps the person’s organs from collapsing

B. Respiratory system moves air into the person’s lungs, and muscular system keeps the person’s body relaxed

C. Digestive system moves nutrients throughout the person’s body, and integumentary system keeps blood flowing through the body

D. Respiratory system moves air into the person’s lungs, and circulatory system keeps blood flowing through the body

Potpourri for $400

C

A marine food web is shown to the right. Which of the following diagrams correctly represents an energy pyramid from this web?

7.5C – Flow of energy in Ecosystem

Potpourri for $500

D

The Edwards Aquifer in south central Texas is the sources of fresh water for more than 1.5 million people. The population in the Edwards Aquifer region is growing fast, and there are more housing developments and roads being built in the area. One danger of building a factory in the recharge zone is that waste water released by the factory is likely to -

A. Seep into farmland around the drainage areaB. Cause seasonal flooding in the surrounding areaC. Poison animals living near the water table springD. Contaminate water collected from artesian wells

7.8C – Human Activity on Groundwater