STAAR Review 2024

I am shiny.

• Metal

• Nonmetal

• Metalloid

Answer explanation

Metals are typically shiny, which distinguishes them from nonmetals and metalloids. Therefore, the correct answer is Metal.

Tags

NGSS.MS-PS1-1

I am ductile - I can be drawn into wires.

• Metals

• Nonmetals

• Metalloids

Answer explanation

Metals are ductile, meaning they can be drawn into wires. This property is characteristic of metals, while nonmetals and metalloids do not exhibit this behavior.

• 4N 
• 6N 
• 10 N 
• 14 N 

Tags

NGSS.MS-PS2-2

Put the steps to form sedimentary rock in order. (a)   (b)   (c)   (d)   (e)  

• weathering

• erosion

• deposition

• compaction

• cementation

Answer explanation

Sedimentary rocks form through weathering, erosion, deposition, compaction, and cementation in that order.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Layer 3 contains many plant fossils. Layer 3 most likely formed in which of these environments?

• Desert

• Forest

• Ocean

• Tundra

Answer explanation

Layer 3 contains plant fossils, indicating a forest environment where plants would thrive. Forest is the correct choice.

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

The diagram shows layers of sedimentary rock and examples of the fossils each layer contains. Which layer contains the oldest fossils?

• A. Layer 2

• B. Layer 4

• C. Layer 1

• D. Layer 3

Answer explanation

Layer 4 contains the oldest fossils as the principle of superposition states that in an undisturbed sequence of rock layers, the oldest rocks are at the bottom.

Tags

NGSS.MS-ESS1-4

The surface of the land displays a mountain range and rivers. What might a scientist conclude about the environment, based on the fossils in the sedimentary layers?

• A. The land was once a rainforest.

• B. The area was once covered by a desert.

• C. The area was once a grassy plain.

• D. The area was once near or covered by an ocean.

Answer explanation

Based on the fossils in the sedimentary layers, a scientist might conclude that the area was once near or covered by an ocean.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What is the chemical formula for water?

Tags

NGSS.MS-PS1-1

Which of the following is a renewable energy source?

• Coal

• Natural Gas

• Solar Energy

• Nuclear Energy

What is the primary gas found in Earth's atmosphere?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Hydrogen