7th Grade 1st Semester Review Part 2

Front

What is a convergent boundary?

Back

A convergent boundary is a tectonic plate boundary where two plates move toward each other, often resulting in the formation of mountains or volcanic activity.

Front

What geological feature is commonly formed at a convergent boundary between two continental plates?

Back

Mountain.

Front

What happens to a comet when it gets close to the sun?

Back

It starts burning due to the heat and solar radiation.

Front

What is the speed of an object that travels 15 meters in 3 seconds?

Back

5 m/s.

Front

How does agitation affect the rate of dissolution of a solute in a solvent?

Back

Agitation increases the rate of dissolution (dissolves faster).

Front

What effect do smaller salt crystals have on the rate of dissolving in water?

Back

Smaller crystals increase the surface area and speed up dissolving.

Front

Define dissolution in the context of chemistry.

Back

Dissolution is the process by which a solute dissolves in a solvent to form a solution.

Front

What is the role of surface area in the rate of dissolution?

Back

Increased surface area allows more solute to come into contact with the solvent, speeding up the dissolution process.

Front

What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when close to the sun, develops a glowing coma and tail.

Front

What is the difference between a rift and a convergent boundary?

Back

A rift is a tectonic boundary where plates move apart, while a convergent boundary is where plates move toward each other.