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8090 [49]
3 years ago
13

The chemical composition of a star can be determined using a

Biology
1 answer:
beks73 [17]3 years ago
3 0
<span>absorption spectra is your answer. i had the same multiple choice question last year</span>
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Light of a certain energy shines on a metal and causes electrons to be emitted.
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<span>Answer B
A decrease in the intensity of the light would interrupt THE EMISSION of energy which would reduce the electrons diminish its brightness, which the emission of electrons by a material when it impinges on him an electromagnetic radiation (visible or ultraviolet light, generally included in the term other types of interaction between light and matter and leads to reduction</span>
6 0
3 years ago
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Astronomers use __________ to remotely identify the ________ of an object by the unique pattern of lines in its spectrum.
Aliun [14]

Answer:Spectroscopy helps astronomers to determine the composition, temperature, density, and motion of an object.

Infrared spectroscopy helps to identify the atoms and molecules in the object.

The red shift or blue shift (Doppler Effect) in a spectral line tells how fast the object is receding from Earth or coming toward it.

The Doppler shift enables astronomers to discover extrasolar planets.

As a planet orbits its star, the star is alternately moving away from or toward us.

Astronomers can use the Doppler shifts to calculate the speed of the star and the mass of the planet that is tugging on it.

Explanation:

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3 years ago
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Why are the leaves important to a plant?
Veronika [31]
Answer: C: Contain chloroplast that perform photosynthesis.

Explanation: Process of elimination deems C correct!
6 0
3 years ago
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Are there lysosomes in plant cells?
Nata [24]

Lysosomes are organelles that float on the cytoplasm and their main function is to secrete waste out of the cell and digest.

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Hope it helped.


BioTeacher101

5 0
3 years ago
Select the layers of Earth that are completely solid. A. crust B. inner core C. outer core D. lower mantle E. asthenosphere
melisa1 [442]

Answer:

The correct answer would be A. crust.

The crust is the outermost layer of the earth which is composed of different types of rocks such as sedimentary, metamorphic, and igneous rocks.

It is completely solid and can be broadly classified into two types: continental crust and oceanic crust.

The thickness of the oceanic crust is about 5 km to 10 km. It is primarily composed of basalt, gabbro, and diabase.

The thickness of the continental crust is around 30 km to 50 km.  

The crust forms lithosphere along with hard and upper mantle.

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3 years ago
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