An atom of a certain element has 36 protons, 36 electrons, and a mass number of 84. At room temperature this element is a very stable gas. How many neutrons are in this atom?

• 45
• 46
• 47
• 48

Tags

NGSS.MS-PS1-1

What plate boundary feature is also shown?

• A ridge formed by an inactive convergent boundary
• A valley forming at an active divergent boundary
• A fault forming at an active transform boundary
• A volcano formed by an active transform boundary

Tags

NGSS.MS-ESS2-3

Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?

• Star 1 is cooler and less bright than Star 2.
• Star 1 is hotter and brighter than Star 2.
• Star 1 is cooler and brighter than Star 2.
• Star 1 is hotter and less bright than Star 2.

Tags

NGSS.HS-ESS1-3

Which two types of organisms in this aquatic food web have a producer–consumer relationship?

• Microscopic algae and white suckers
• Small invertebrates and amphipods
• Phytoplankton and mummichogs
• Amphipods and channel catfish

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-2

Water with which of these conditions would cause the most competition for resources among all three species of fish?

• Very cold, very clear, and very fast
• Very warm, very clear, and very slow
• Mild temperatures, some suspended particles, flows very fast
• Mild temperatures, suspended particles, flows at a medium speed

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of these elements is in this group?

• Lithium
• Strontium
• Aluminum
• Silicon

At which location is the gravitational potential energy of the water the greatest?

• Location W 
• Location X 
• Location Y 
• Location Z 

Tags

NGSS.MS-PS3-2

Which area of the coastline has most likely experienced the greatest effect of erosion from waves over hundreds of years?

• Area N
• Area P
• Area S
• Area T

Tags

NGSS.MS-ESS2-2

Which of these formulas contain equal numbers of nitrogen atoms?

• Formulas I and III
• Formulas I and IV
• Formulas II and III
• Formulas I, II, and V

Based on the dichotomous key, in what order should this insect be classified?

• Mantodea
• Raphidioptera
• Coleoptera
• Lepidoptera