The 20 or so minerals that make up most of the rocks of earth's crust are known as?

Answers

Answer 1

Answer: quartz, feldspar,hornblende, and mica. theres your anwser

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What would you do to change the volume of gas?
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40 g of magnesium and 40 g of oxygen react in a chemical reaction in a close system which of the following must result
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need help with the ones that have numbers on the sides.#1 #2 #3 #4 please help.i will pick fair brainliest answer

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1. Some stars are bigger than others, some are different colors or temperatures. It all really depends on the age of the star.

2. Four differences could be:

1) Outer planets are much farther away from the sun, so they get less sunlight than inner planets.
2) Also, the outer planets are all gas giants (excluding Pluto), while inner planets are all rocky planets.
3) Inner planets also have a much higher density than outer planets.
4) Outer planets also tend to have many more moons than inner planets (such as Jupiter, with 63 known moons).

3. The barrier that separates the inner from the outer planets is a ring of space rocks known as the Asteroid Belt.

A comet is a ball of ice that orbits a star in a wide elliptical orbit.
An asteroid is a large rocky body that orbits a star, and could be anywhere in size from 600 miles across to tiny dust particles.
A meteoroid is a small object floating through space freely (not necessarily bound in any orbit) that is usually made of a rocky or metallic material.

4. Day and night are caused by the earth's rotation on its axis. Night is relative to the observer, and occurs when the observer is on the side opposite that on which the sun is shining.

Hope that helped =)

1.Difrences are color,size and the amount of light it gives off 2. 1.inner planets are warmer 2.inner planets are closer to the sun 3.Outer planets are balls of gass 4.outer planets bigger 3.an astroid belt A comet is a tail of gas and dust particles An asteroid is a large rock A meteoroid is lumps of rocks that orbit the sun 4.The rotation of the earth on its axis

A car is stopped at a red light. When the light turns green, the car startsaccelerating again. In the process, a cup of coffee sitting in a cup-holder spills
out onto the rear seats. Why does this happen?

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Answer:

See the explanation below

Explanation:

This happens because the coffee was at rest, at the time when the car accelerates to move forward the container containing the coffee also accelerates in the same direction, the liquid when moving suddenly spills. The same will happen if the car slows down, any sudden movement changes will cause the coffee to spill, understood by sudden movements when it accelerates or slows down.

Answer:

This happens because of inertia.

Explanation:

Inertia is the ability of a body to remain in its state of rest or relative movement, while an external force is not acting on it.

It is when a body objects to modifying its state of relative rest or movement, including the speed and direction in which this happens.

When a car accelerates, a cup of coffee sitting in a cup-holder spills out onto the rear seats, because it has left its state of rest due to the acceleration force of the car.

Describe how velocity changes with time

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Speeding up, slowing down, and changing direction ... like moving along a curve ... are all changes in velocity. They're also all accelerations.

Which values satisfy the inequality? |z| ≤ 5 Choose all answers that are correct A. z = –6 B. z = –5 C. z = –1 D. z = 8 oops this is actually for math

plz help i will give all i got

Answers

|z|≤5

Solve Absolute Value.

|z|≤5

We know z≤5 and z≥−5

z≤5(Answer 1)

z≥−5(Answer 2)

z≤-1(Answer 3)

The answer is B and C.

A 7.00-kg bowling ball from a 2.00-m shelf. Just before hitting the floor, what will be it’s kinetic energy?

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I'm not sure of the numbers sense I dont have a calculator right now. The formula is 1/2*M*V^2.

Our friend Peter back at the zoo is using a crane to lift an elephant into an enclosure. The elephant weighs 10,000 N. The crane lifts the elephant 5 meters in 25 seconds. How much power was used to accomplish this task?

Answers

10000 x 5 =50,000
50,000 / 25 = 2000

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