Final Cumulative Review

Which statement does NOT correctly compare silicon with another element?

(Look at the Periodic Table. Is it a metal, non-metal, or metalloid?)

• Silicon is a better conductor of electricity than sulfur.

• Silicon conducts electricity as well as copper does.

• Silicon is a solid at room temperature, but argon is a gas.

• Silicon is less malleable than silver.

The diagram shows how a cylinder in a car engine causes the car to move.

Step 1--a mixture of fuel and air enters the cylinder

Step 2--the spark plug ignites the fuel-air mix

Step3--the hot, expanding gases push the piston down

Step 4--The piston turns the crankshaft, which rotates the wheels

Which description of the energy conversions in this process is correct?

• The thermal energy in the fuel-air mixture is converted to electrical energy, which is then converted to mechanical energy.

• The electrical energy in the fuel-air mixture is converted to mechanical energy, which is then converted to thermal energy.

• The mechanical energy in the fuel-air mixture is converted to electrical energy, which is then converted to thermal energy.

• The chemical energy in the fuel-air mixture is converted to thermal energy, which is then converted to mechanical energy.

1     Some students conducted a laboratory investigation to learn more about the physical properties of different elements. They observed four samples and recorded their observations in the table.

Based on these observations, which sample is most likely a nonmetal ?

• Sample 1

• Sample 2

• Sample 3

• Sample 4

1     Aluminum, sulfur, and chlorine are elements found on the periodic table. Tests involving these three elements would show that at a normal room temperature -

• sulfur is malleable and aluminum conducts electricity.

• chlorine is malleable and conducts electricity.

• aluminum is malleable and conducts electricity.

• all three elements are malleable and conduct electricity.

The graph shows the motion of a ball rolling on a straight track.

What was the ball's average speed during the time represented in the graph?

• 0.2 m/s

• 0.5 m/s

• 5.0 m/s

• 10.0 m/s

What keeps planets in the system from moving in straight lines through the galaxy?

• Light energy

• Gravity

• Inertia

• Potential energy

1        A student kicks a soccer ball three times. Another student records the distance, the amount time the ball travels, and the average speed in the table shown.

How many seconds did it take for the ball to travel 30 m during Kick 3?

• 0.5 s

• 1.0 s

• 1.5 s

• 2.0 s

A group of students used the diagram to classify three organisms into different kingdoms.

Which table correctly identifies the three kingdoms?

• 
• 
• 
• 

A student makes a model of the sun-Earth system by swinging a ball around her head. Using this model, the student is trying to explain how Earth stays on a path around the sun.

The student explains that this path is the result of -

• the magnetic attraction between Earth and the sun.

• potential energy stored in Earth that originated in the sun.

• electromagnetic energy from the sun pulling on Earth.

• the gravitational attraction between the sun and Earth.

In which kingdom should this organism be classified?

Characteristics of an Organism

*Is multicellular

*Is autotrophic

*Has cell walls

*Has cell nuclei

*Can reproduce sexually or asexually

• Fungi

• Animalia

• Plantae

• Eubacteria