Question

please help

Answer 1

User: LaTeisha Gibson
In Course: Earth-Space Science V11 ( 3290)
Instructor: Mrs. Wendy D. Light






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S1 Our Universe Module Exam

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Question 1 (Multiple Choice Worth 2 points)

[OU.02] NASA's space shuttle program in Florida will end in 2011. Which of these would be the most likely outcome of this event on the locations near the space center?

increase in number of restaurants and decrease in unemployment

increase in tourism and decrease in use of space technologies in homes

increase in unemployment and decrease in profit made by local businesses

increase in profit made by construction companies and decrease in use of space technologies in homes


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Question 2 (Multiple Choice Worth 2 points)

[OU.04]Which of these is the most likely reason why the Steady State Theory of origin of the universe has been rejected?

it was too old to be used in modern times

it was too complicated for scientists to understand

scientists found new evidence to prove it invalid

scientists discovered a shorter theory to replace it


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Question 3 (Multiple Choice Worth 2 points)

[OU.01]Microwaves are produced when

magnetic and electric fields are applied parallel to each other

magnetic and electric fields are applied perpendicular to each other

transverse and longitudinal waves are applied parallel to each other

transverse and longitudinal waves are applied perpendicular to each other


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Question 4 (Multiple Choice Worth 2 points)

[OU.03]Light from a distant star has undergone a red shift. Which of these conclusions is correct about the star?

Its pitch is increasing.

Its parallax is increasing.

It is moving towards Earth.

It is moving away from Earth.


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Question 5 (Multiple Choice Worth 2 points)

[OU.02]The ozone layer in Earth's atmosphere absorbs ultraviolet radiations. Which of these is the best location to place a telescope used to observe ultraviolet radiations from stars?

space

mountain

top of building

high-flying aircraft


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Question 6 (Multiple Choice Worth 2 points)

[OU.01]Which of these statements is correct for light waves?

It does not travel through water.

It does not travel through vacuum.

It travels fastest through vacuum.

It travels fastest through water.


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Question 7 (Multiple Choice Worth 2 points)

[OU.04]One student records information about galaxies in the chart shown below.



1 2 3 4
Type of galaxy Shape Force holding it together Type of matter present Example
Spiral Pinwheel Gravitational Stars, gas, and dust Milky Way
Elliptical
Irregular

Which columns in the chart would most likely have the same description for all three galaxies?
Column 1 and Column 4

Column 2 and Column 4

Column 1 and Column 3

Column 2 and Column 3


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Question 8 (Multiple Choice Worth 2 points)

[OU.04]Two stars, Star 1 and Star 2, are at almost equal distances from Earth. The table below shows the masses of the two stars.



Name of Star Mass of Star (in million solar masses)
Star 1 3.61
Star 2 3.59

Which of these statements is most likely correct about the stars?
Earth exerts almost equal gravitation force on both the stars.

Earth exerts greater gravitation force on Star 2 than on Star 1.

Star 1 attracts Star 2 with a greater gravitational force than Star 2 attracts Star 1.

Star 2 attracts Star 1 with a greater gravitational force than Star 1 attracts Star 2.


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Question 9 (Multiple Choice Worth 2 points)

[OU.04]Two groups of scientists got different results while studying about the origin of the universe. Which of these statements is most likely true about the results of the two groups of scientists?

They were not repeated and verified.

They provide new testable ideas to strengthen science.

They show that the ideas of both groups of scientists are invalid.

They prove that it is impossible for all scientists to accept the same theory.


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Question 10 (Multiple Choice Worth 2 points)

[OU.04]The picture below shows a galaxy with an elongated center.

barred spiral galaxy
© NASA

What type of galaxy is shown in the picture?

spiral

elliptical

irregular

barred spiral


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Question 11 (Multiple Choice Worth 2 points)

[OU.01]One astronomer is studying the nature of an electromagnetic wave emitted by hot gases in the universe. The electromagnetic wave has higher frequency than visible light but lower frequency than gamma rays. What electromagnetic wave is the astronomer most likely studying?

X-ray

Radio wave

Microwave

Infrared light


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Question 12 (Multiple Choice Worth 2 points)

[OU.03]Which of these properties of a star best determines its life cycle?

brightness

mass

density

temperature


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Question 13 (Multiple Choice Worth 2 points)

[OU.01]The picture below shows the position of Earth and two stars.

Image of Earth and two stars. Star 1 is to the right of Earth, and Star 2 is a little to the right of Star 1.

Star 2 is 52 light years from Earth and 18 light years from Star 1. If Star 1 explodes as a supernova, in how many years would the explosion be seen from Earth?

18

34

52

70


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Question 14 (Multiple Choice Worth 2 points)

[OU.03]A star is observed from two positions of Earth in its orbit, in summer and winter. Which of these is the best method to calculate the approximate distance of the star from Earth?

measure the parallax and use it in calculations

measure the red shift of emitted light and use it in calculations

use doppler effect to calculate the shift in light traveling from star to Earth in winter

use doppler effect to calculate the shift in light traveling from star to Earth in summer


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Question 15 (Multiple Choice Worth 2 points)

[OU.04]Which of these is the most likely reason why the Steady State Theory has been rejected by the scientific community?

scientists worldwide do not agree with its results

scientists need expensive equipments to verify its results

its results remain unchanged over a long period of time

its experiments contradict the old theories about the universe


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Question 16 (Multiple Choice Worth 2 points)

[OU.04]The picture below shows the model of a raisin bread before and after it is baked.

Raisin bread dough is dotted with raisins, the dots are close together. As the bread bakes it expands and the raisins are spread further apart.

What does the model of the rising raisin bread demonstrate about the origin of the universe?

expansion of the universe causes galaxies to increase in size

expansion of the universe causes galaxies to move further apart

gravitational force determines the distribution of matter in the universe

gravitational force between two galaxies depends on the distance between them


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Question 17 (Multiple Choice Worth 2 points)

[OU.03]The table below shows the initial masses of four stars.



Name of Star Star 1 Star 2 Star 3 Star 4
Initial mass of star (in Solar mass) 9 0.9 5 0.3

Which of these stars will stay on the main sequence for the shortest time?
Star 1

Star 2

Star 3

Star 4


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Question 18 (Multiple Choice Worth 2 points)

[OU.04]The COBE mission and WMAP mission provide evidence to support the

Hubble's Law

Big Bang Theory

Steady State Theory

Doppler Effect


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Question 19 (Multiple Choice Worth 2 points)

[OU.01]The diagram below shows the distance traveled by two light waves in 1 second.

Two light waves presented over a scale of time, demonstrating the waves over 1 second of time. Wave 1 shows 5 wavelengths occurring over 1 second. Wave 2 shows 10 wavelengths occurring over 1 second.

Based on the diagram, which of these conclusions is correct?

The wavelength of Wave 1 is double the wavelength of Wave 2.

The wavelength of Wave 2 is double the wavelength of Wave 1.

The frequency of Wave 1 is four times the frequency of Wave 2.

The frequency of Wave 2 is four times the frequency of Wave 1.


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Question 20 (Multiple Choice Worth 2 points)

[OU.03]The pictures below show the wavelengths and intensities of electromagnetic radiations emitted by three stars, Star 1, Star 2, and Star 3.

Image shows 3 blackbody curve graphs. Star 1 peaks at a wavelength of 8500A, Star 2 peaks at 6000A and Star 3 peaks at 3500A.

Which of these statements is correct about the temperature of the three stars?

Star 2 is hotter than Star 1.

Star 2 is hotter than Star 3.

Star 1 and Star 2 have the same temperature.

Star 1 and Star 3 have the same temperature.


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Question 21 (Multiple Choice Worth 2 points)

[OU.01]Which of these waves has the greatest frequency?

Wave shown with 2 wavelengths.

Wave shown with 3 wavelengths.

Wave shown with 1 wavelength stretch over a short distance.

Wavelength shown with 1 wavelength stretched over a long distance.


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Question 22 (Essay Worth 3 points)

[OU.02] In your own words, explain why the period between 1960 and 1969 is regarded as the busiest period in space exploration history. What are two technological advancements or discoveries from this time period?





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Question 23 (Essay Worth 3 points)

[OU.04] In your own words, explain how Hubble's Law provides evidence for the Big Bang Theory.