EOC Science

A population is composed of individual organisms. Which of the following is an example of genetic variation within a population of birds?

• several organisms with broken wings

• individual organisms with broken legs

• organisms with different sized beaks

• population of identical bird beaks

Tags

NGSS.MS-LS4-4

Rust is the process of iron combining with oxygen. Why is the formation of rust considered a chemical change?

• rust has greater chemical reactivity than oxygen

• rust has properties that differ from both iron and oxygen

• rust has the same chemical composition as iron

• rust has a very high melting point

Tags

NGSS.MS-PS1-2

The table shows the physical properties of bleach, oven cleaner, vinegar, and carpet cleaner. Which physical property best categorizes vinegar in a separate group from the oven cleaner?

• solubility in water

• color of solution

• melting point

• boiling point

Tags

NGSS.MS-PS1-2

Look at the organisms pictured here. How are these organisms classified?

• different domain, same kingdom

• different domain, different kingdom

• same domain, same kingdom

• same domain, different kingdom

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Different cell organelles have different functions. Which type of cells would most likely have the most mitochondria.

• cells in the stomach lining that make digestive enzymes

• nerve cells that transmit signals to the brain stem

• muscle cells in the leg muscles of a runner

• red blood cells that transport oxygen

Tags

NGSS.MS-LS1-2

Which statement best explains how periods on the periodic table are organized?

• increasing atomic number from left to right

• increasing number of neutrons from left to right

• decreasing number of electrons from left to right

• decreasing atomic mass number from left to right

Which BEST explains the importance of dissolved gases in the ocean?

• They help control pollution.

• They help provide oxygen for aquatic animals.

• They help maintain a constant water temperature.

• They help maintain constant levels of salinity.

Where are earthquakes most likely to occur?

• In the middle of plates

• In the oceans

• Along plate boundaries

• Anywhere on the Earth

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS3-2

The table shows the number of neutrons, protons, and electrons for two atoms. How are the two atoms alike?

• They have the same charge.

• They have the same mass number.

• They have the same atomic number

• They are atoms of the same element.

Tags

NGSS.MS-PS1-1

Elements with seven valence electrons —

• are highly reactive

• are highly stable

• have a high mass

• have a low mass