Font size
WorksheetsEMS, The Sun & Stars
Total questions: 73
Worksheet time: 46mins
Look at this image of the Ring Nebula. "A" represents the gaseous nebula; "B" represents the hot (100,000 degree Kelvin) white dwarf (thermal radiator) seen with no gas in front of it; and "C" represents a star much hotter than the nebula but lying hundreds of light years beyond the nebula. Which of these objects would you expect to observe an emission spectrum?
A
B
C
Which element(s) are found in the star's spectra below?
Hydrogen only
Hydrogen & Helium
Calcium only
Hydrogen & Calcium
Spectroscopy can be used to study
galaxies.
the surface of Mercury.
stellar composition.
UFO's.
All stars begin their lives as gas and dust in a nebula. This would be compared to which life stage of a human being?
infant
toddler
adolescent
adult
Our sun is known as a middle-aged, stable star. Also known as a ____________________.
Gas Giant
Nebula
Pulsar
Main Sequence Star
The brightness of a star as seen from earth
Apparent magnitude
Awesome magnitude
Absolute magnitude
Amazing magnitude
What color star is the coolest?
The luminosity of a star describes its ______________.
brightness
temperature
age
color
Use the H-R Diagram to answer this question.
Which star has a temperature of 9,000 K and a luminosity of 0.001?
Altair
Deneb
Procyon B
Proxima Centauri
Use the H-R Diagram to answer this question.
Which star has a temperature of 3,500 K and an absolute magnitude of +13?
Barnard
Mira
Proxima Centauri
Kruger 60 A
Use the H-R Diagram to answer this question.
What color would a star appear to be if its temperature is 4500 K?
K0
orange
yellow
white
Use the H-R Diagram to answer this question.
What is the luminosity of Regulus?
1
10
100
1000
Use the H-R Diagram to answer this question.
What is the absolute magnitude of Aldebaran?
-5
-3
0
1
Use the H-R Diagram to answer this question.
What is the temperature range of a star that has a spectral class of M?
3500-4900 K
3500-4900 C
2000-3500 C
2000-3500 K
What type of stars are Deneb, Betelgeuse, Antares and Rigel?
Giants
Supergiants
White Dwarfs
Red Dwarfs
What type of star can have a temperature range from 3,000 K - 25,000 K? Use the H-R Diagram.
Giant
White Dwarf
Red Dwarf
Main Sequence
Why aren't there any green stars?
Because the human brain interprets green wavelengths as white since there are equal amounts of blue and red wavelenths.
Because stars don't fuse elements that make green wavelengths of light.
Because green light can't travel through space
How many stars are estimated to be in the Milk Way Galaxy?
1 million
100 million
1 billion
100 billion
How many stars are estimated to be in the universe?
1,000,000,000,000
1,000,000,000,000,000,000,000
1.000,000,000,000,000,000,000,000,000
1,000,000,000,000,000,000,000,000
What type of star will our sun turn into next?
Main Sequence
Red Giant
White Dwarf
Black Dwarf
Which types of stars begin to fuse Helium into Carbon? (choose all that apply)
Main Sequence
Giants
Supergiants
Supernovas
Which type of stars have shed their outer layers and are no longer producing fusion? (ex. Helix Nebula)
Supernovas
White Dwarfs
Neutron Stars
Black Holes.
Which stars are considered to be "failed stars" because they lack the mass required to begin fusion?
Red Dwarfs
Brown Dwarfs
Black Dwarfs
Protostars
What process do stars produce (which acts as an outward force) that prevents them from collapsing due to gravity (which acts as an inward force)?
fusion
fission
friction
gravity
If a star has elements with a higher mass, what does that tell us about the star?
It is old
It is young
It is a spring chicken
It is having a mid-life crisis
According to scientists, what is believed to exist at the center of the Milky Way galaxy? (choose all that apply)
a black hole
oort cloud
Neutron Star
What is the term used to describe the boundary around a black hole?
Black boundary
Event horizon
Gravity limit
Space edge
According to Einstein's theory of relativity, how does the bending of space-time fabric change with the mass of an object?
It bends more if the mass is smaller
It does not change with mass
It bends more if the mass is larger
It bends randomly regardless of mass
How many telesccopes were used to get the first ever image of a black hole (M87)?
2
4
6
8
Larger, more massive stars will die more quickly than smaller stars because (choose all that apply)
their core is hotter so they burn fuel faster.
they fuse H to He more rapidly.
they fuse He to H more rapidly.
Which part of the electromagnetic spectrum is the ONLY one our eyes can detect?
____________are areas of plasma on the sun that appear darker and are cooler than the plasma around them. The darkest region is called the ___________.
Sundogs; umbra
Sundogs; penumbra
Sunspots; umbra
Sunspots penumbra
In which area of the sun does plasma rise as it heats up, then sink back down as it cools?
the core (1)
the radiation zone (2)
the convection zone (3)
the corona (6)
photosphere (8)
chromosphere(5)
corona (6)
convection zone (3)
Which layer of the sun can be seen during a total solar eclipse?
Which element makes up about 90% of the sun's mass?
What feature of the sun is shown here?
Prominence
Sunspot
Core
Solar Flare
Liquid
Approximatley, what percentage of all the matter in the solar system does the Sun make up?
10%
25%
50%
99.9%
In the years surrounding the next solar maximum of 2025, what can we expect to experience?
warmer weather
less reliable technology
poor health
strong auroras
What do planets and moons with auroras have in common?
Surface temperature
Magnetic fields
Distance from the sun
Atmospheric pressure
Auroras dance and shimmer in the Ionosphere which is part of this layer of the atmosphere.
Exosphere
Stratosphere
Troposphere
Thermosphere
What atmospheric component do particles mostly collide with to cause green auroras?
Helium
Nitrogen
Carbon dioxide
Oxygen
The Earth's magnetic field (magnetosphere) is useful for _____.
deflecting solar wind
keeping track of time
protecting earth from the sun's radiation
making it look cool in front of the other planets
What is the name of the waxing and waning cycle of the sun that takes place every 11 years?
La Nina
El Nino
Charles Schwab
Schwabe Cycle
Which planet rotates at the same speed of the Schwabe cycle of the sun (11 years)?
Jupiter
Saturn
Mars
Neptune
Which type of electromagnetic radiation is used for killing cancer cells because it has the highest frequency and energy levels?
Microwaves
Radio Waves
Gamma Rays
Infrared
Which type of electromagnetic radiation is used for night vision goggles and remote controls?
Radio Waves
Microwaves
Infrared
Gamma
Which type of electromagnetic radiation causes sunburns?
Radio Waves
Microwaves
Infrared
Ultraviolet
What is the primary source of electromagnetic radiation?
The Earth
The Sun
Manufactured Devices
Radioactive Elements
Aurora that produces blue and purple colors resulting from solar particles colliding with __________ in Earth's atmosphere
Oxygen
Hydrogen
Nitrogen
Helium
Solar wind/particles are deflected/directed toward the poles by the magnetosphere of Earth. What causes Earth to have a magnetosphere?
The Sun's Core
Jupiter
The Moon's Core
Earth's Core
What is the name for the northern lights that are viewed from the southern hemisphere?
Aurora Borealis
Aurora Antarcticus
Aurora Australis
Aurora South Americas
Sunspots are about _____ Earth’s size.
1/8
1/4
2 x's
20 x's
Sunspots typically last long enough to complete at least one complete revolution as the Sun spins. The Sun rotates…
like a solid object, all with the same time to spin
faster at the poles and slower at the equator (24-30 hours)
slower at the poles and faster at the equator (24-30 days)
What is the name of the transition region (area where the temperature drops significantly) of the sun between the radiation zone and convective zone?
Chromosphere
Granules
Tacholine
Prominence
The sun has enough hydrogen fuel expected to last _________.
100 years
100 million years
10 billion years
100 billion years
Scientists use electromagnetic waves to detect supernovas in space. Why are electromagnetic waves used instead of sound waves?
Electromagnetic waves can travel in vacuums.
Electromagnetic waves cannot be absorbed.
Electromagnetic waves travel slower than sound waves.
Electromagnetic waves are created by physical vibrations.
From the years 2005-2022, what is the average amount of time that passes between each decline in UFO sightings?
2 years
4 years
6 years
10 years
What range of latitudes have the majority of the UAP/UFO sightings in the past year?
0-10
15-30
30-45
50-70
In the past year, 118 UAP/UFO reports were determined to be birds, drones, and weather balloons. Based on the data table, would any of these objects be found at the same altitude as the majority of the cases? (choose all that apply)
Yes, weather balloons
No, only commercial air traffic.
No, they are flying at an altitude higher than all of them.
Yes, drones and birds.
