Question

1. examine the diagram below.

choose a word from the drop - down menu for each blank to complete the sentence below. after 80,000 years, choice 1 will most likely be created along the choice 2 boundary.
choice 1: valleys, rivers, mountains, islands
choice 2: divergent, convergent, transform

1. which landform results when one of the earths plates slide past another?

a. fault
b. plateau
c. mountain
d. delta

1. determine if the process listed below is either an example of a chemical or a physical change. (2 points)

select only one choice per row

	chemical	physical
concrete walkway expanding during a hot summer day
wind erosion
nail rusting
freezing of a pond
limestone hydrolysis
decomposition of rocks

Explanation:

Step1: Recall plate - boundary knowledge

At transform boundaries, where plates slide past each other, faults are formed. At divergent boundaries, new crust is created and features like valleys and rifts can form over time. At convergent boundaries, mountains or islands can be formed due to the collision or subduction of plates.

Step2: Analyze question 8

The diagram shows a transform - like motion. Along a transform boundary, faults are common, but among the given choices for Choice 1 (valleys, rivers, mountains, islands), over a long time like 80,000 years, valleys are more likely to be created due to the stress and movement at the boundary. The boundary type is transform.

Step3: Answer question 9

When one of the Earth's plates slides past another (transform boundary), a fault is the land - form that results.

Step4: Recall physical and chemical change concepts

A physical change is a change in the form or state of matter without a change in its chemical composition. A chemical change results in a new substance being formed.

Step5: Analyze deposition

Deposition is a physical change as it involves the settling of particles without changing their chemical nature.

Step6: Analyze concrete walkway expanding

The expansion of a concrete walkway during a hot summer day is a physical change due to thermal expansion, no new chemical substance is formed.

Step7: Analyze wind erosion

Wind erosion is a physical change as it involves the movement and wearing away of materials without a chemical reaction.

Step8: Analyze nail rusting

Nail rusting is a chemical change as iron reacts with oxygen and water to form iron oxide (rust), a new chemical substance.

Step9: Analyze freezing of a pond

Freezing of a pond is a physical change as it is a change of state from liquid to solid without a change in the chemical composition of water.

Step10: Analyze limestone hydrolysis

Limestone hydrolysis is a chemical change as the limestone (calcium carbonate) reacts with water and acidic substances to form new chemical substances.

Step11: Analyze decomposition of rocks

Decomposition of rocks can be a chemical change if there are chemical reactions involved in breaking down the rock minerals.

Answer:

1. Choice 1: valleys; Choice 2: transform
2. A. fault

10.
deposition: Physical
concrete walkway expanding during a hot summer day: Physical
wind erosion: Physical
nail rusting: Chemical
freezing of a pond: Physical
limestone hydrolysis: Chemical
decomposition of rocks: Chemical