Below are the physical properties of copper:

How does the density of a 4-g sample of copper compare to that of a 12-g sample of copper?      

• Its density is on-half the density of the 12-g sample.
• Its density is the same density as the 12-g sample.
• Its density is twice the density of the 12-g sample.
• Its density is three times the density of the 12-g sample. 

Which is considered a good insulator of heat?

• aluminum, because it allows heat to flow easily
• glass, because it allows heat to flow easily
• plastic, because heat is unable to flow easily through it
• silver, because heat is unable to flow easily through it

Why are there high and low tides on Earth?

• They are due to changes in the moon's tilt on its axis.
• They are due to the gravitational pull between Earth and the moon.
• They are due to the magnetic force between Earth and the moon.
• They are due to changes in the moon's speed every month. 

Which contributes to Earth's ability to sustain life?

• The atmosphere allows all of the sun's radiation to enter due to Earth's distance from the sun.
• The atmosphere prevents all space debris from reaching the surface due to the ozone layer.
• The atmosphere is extremely thin due to the temperature of the sun.
• The atmosphere is breathable due to the unique mixture of gases. 

How does gravity support life on Earth?

• by forcing Earth to continuously spin on its axis, which contributes to day and night
• by causing changes in the distance between Earth and the sun, which contributes to seasons
• by keeping water and gases in the atmosphere close to Earth's surface, which contributes to life processes
• by preventing meteors and comets from hitting Earth's surface, which protects living organisms from space fragments.

Which best summarizes the composition of the surface of Earth?

• Three-fourths of Earth's surface is land.
• One-fourth of Earth's surface is water.
• Earth's surface contains more land than water.
• Earth's surface contains more water than land. 

Which is the basic composition of Earth's core?

• The solid inner core is surrounded by a liquid outer core.
• The liquid inner core is surrounded by a solid outer core.
• Both the inner core and the outer core are solid.
• Bot the inner core and the outer core are liquid. 

Which best explains the movement of tectonic plates?

• They move several miles each year because of convection within Earth.
• They move several centimeters each year because of convection within Earth.
• They move several feet each year because of convection within Earth.
• They move several kilometers each year because of convection within Earth.

This chart compares three different types of waves. 
How do the wave characteristics compare for these waves?

• Sound waves and P-waves are longitudinal waves, while light waves are transverse waves. 
• Light waves and P-waves are transverse waves, while sound waves are longitudinal waves. 
• Sound waves, P-waves, and light waves are all longitudinal waves.
• Light waves, P-waves, and sound waves are all transverse waves.

Which best explains the relationship between parent rock and soil composition?

• Weathered parent rock determines the number of organisms found in the soil. 
• Weathered parent rock determines the amount of air found in the soil. 
• Weathered parent rock is the largest component of soil.
• Weathered parent rock is the smallest component of soil.