What is basalts cleveage and streak

need to know due tommorow

Answers

Answer 1
Answer: I suppose you are taking Earth Science and are in Grade 9??

Basalt --


Color: Black
Composition: Mafic 
Texture: Aphanetic
Cooling/Crystallization History: Extrusive and Fast
Tectonic Setting: Hot Spots, Divergent Plates, Mid Ocean Ridges
Determining Factor: Basalt is Aphanetic and has Small Crystals
Streak: 
 white.
Cleavage: Basalt has no 
cleavage, it has fracture...

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Earthquakes and volcanic eruptions can be predicted.
a. True
b. False

Answers

True, an earthquake can be predicted. I just did this question and got it correct.

False... hurricanes, tornadoes, and tsunamis CAN be predicted though

A geologist finds rocks with dinosaur fossils.What is most likely the approximate age of the rocks?

A.
1 thousand years old

B.
500 million years old

C.
70 million years old

D.
5 billion years old

Answers

It's being estimated that dinosaurs lived on Earth from about 237 million years ago to about 66 million years ago. So answers B and D are definately too "old", while answer A is too "young". I'd pick answer C as it's most probable.

The huge hole left by the collapse of a volcanic mountain is called aa. lava plateau.
b. caldera.
c. cinder cone.
d. shield volcano.

Answers

The huge hole left by the collapse of a volcanic mountain is called a  caldera. Correct answer: B

It is a massive crater located at the sites of enormous volcanic eruptions after large amounts of magma have been expelled from underground.  Some calderas are surrounded by steep cliffs, and some are filled with water and form lakes.

The huge hole left by the collapse of a volcanic mountain is called a caldera(B)

Further Explanations:

Volcanoes are the opening in the on the surface of the Earth from where lava, tephra, and steam from inside the earth erupts to the surface of the earth. The volcanic terrains get formed by the slow eruption of lava. Most of the eruption occurs due to the movement of the tectonic plates that creates pressure inside the earth and forces the lava top to erupt to the surface of the earth.

The formation of the volcanic mountains is also the result of the volcanic eruption and is considered to be the youngest mountains of all the mountains. The lava that forms the volcanic mountain is the lava that is present deep inside the earth, even below the ballistic lava.

The collapse of the volcanic mountains forms a deep hole in that area that is also called Caldera. The major reason behind the collapse of the mountain is the emptying of the magma chamber below the mountain due to over-discharge of magma from that region.

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Answer Details

Grade: High School

Subject: Geography

Chapter: Volcanoes`

Keywords:Volcanoes, lava, tephra, steam, volcanic terrains, tectonic plates, volcanic mountains, volcanic eruption, ballistic lava, Caldera, magma chamber

During summer, the Northern Hemisphere of Earth is _____. cooler than the Southern Hemisphere tilted toward the Sun tilted away from the Sun furthest from the Sun

Answers

The answer is tilted toward the sun.

The earth is furthest from the sun

When it rained one morning, Willie saw a puddle of water form in the street. In the evening the puddle was gone. The water probably disappeared by 1)evaporation 2)condensation 3)precipitation 4)expansion

Answers

1. evaporation because in the water cycle the water turns to water vapor during evaporation

The answer is 1) evaporation.

Evaporation is a phenomenon in which water turns into gaseous form without reaching its boiling point. It rather depends on other factors such as wind speed, heat, surface etc.The water could not have dissapeared due to heat as it is illogical to think of the temperature reaching its boiling point.

All the other options are illogical and hence evaporation is the correct answer.  

How is matter important to the universe?

Answers

All living and nonliving things are made of matter and all matter consist of microscopic particles called atoms. Life, in connection to matter, requires a constant supply of matter. Matter can exist in different states, and plasma is a state of matter that composes the bulk of the entire universe. Matter is conserved and stores energy.

To sum up everything, human beings are made up of matter and so is everything else in the universe. Matter is life and it is true to say that “Matter makes up reality”. It is not objectively important or unimportant, it is only valuable as it is to the observer.


Matter is fundamental to the universe's existence and functioning. It comprises all physical substances, from atoms to galaxies, forming stars, planets, and life itself.

Matter's gravitational pull shapes the cosmos, creating galaxies, clusters, and cosmic structures. Stars, fueled by matter, produce energy and light, driving the universe's dynamics. Planets, including Earth, sustain life due to matter's interactions and chemical properties.

From the smallest subatomic particles to the vastness of cosmic bodies, matter plays a crucial role in shaping the universe's evolution and complexity. Understanding the properties and behavior of matter deepens our comprehension of the universe's past, present, and future.

Therefore, matter is fundamental to the universe's existence and functioning.

Learn more about matter here:

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