What is necessary in order for astronauts to survive long trips into space?
technologies that permit astronauts to see better
technologies that make time go faster
technologies that make it easier to study hunger
technologies that counteract the effects of weightlessness
Which of the following do astronomers detect directly when they use telescopes to study stars and galaxies?
atoms
energy
mass
heat
Which of the following is NOT a discovery made with the aid of a telescope?
evidence that planets orbit the sun
craters on the moon
the moons of Jupiter
life on other planets
How could an astronomer completely eliminate the distortion of light caused by Earth's atmosphere to get the best telescope images?
put the telescope at a very high altitude
use lenses rather than mirrors to gather light
use an array of telescopes to concentrate the image
locate the telescope in space
The Greek mathematician Ptolemy created an ancient model of the universe in which the was at the center.
Sun
Milky Way
Earth
Moon
Telescopes magnify which of the following?
sound
motion
light
heat
What evidence did Galileo observe that supported Copernicus's idea of a heliocentric model?
naked-eye observations of Jupiter moving around a fixed center
naked-eye observations and mathematics of the sun moving around Earth
telescopic views of the sun moving around Earth
telescopic views of planets moving around a fixed center
The clearest image of the planet Neptune would be obtained using:
a pair of binoculars.
a telescope on Earth.
a telescope in space.
a spectroscope.
To determine what a star is made of, an astronomer uses:
an optical telescope.
a radio telescope.
a spectrograph.
an astrolabe.
Why are new technologies necessary for future space exploration?
Astronauts will spend long periods in spacecraft and we need to know how this will affect their bodies.
New technologies will permit astronauts to eat fewer meals.
Current technologies don't allow astronauts to sleep very well in space.
Space travel is very expensive and we will need to know the costs ahead of time.
How could an astronomer completely eliminate the distortion of light caused by Earth's atmosphere to get the best telescope images?
put the telescope at a very high altitude
use lenses rather than mirrors to gather light
use an array of telescopes to concentrate the image
locate the telescope in space
Which of the following is NOT a discovery made with the aid of a telescope?
evidence that planets orbit the sun
craters on the moon
the moons of Jupiter
life on other planets
Answers: 2
Chemistry, 22.06.2019 12:00
An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?
Answers: 1
Chemistry, 22.06.2019 15:30
Draw the lewis dot structure for each of the following polyatomic ions
Answers: 1
Chemistry, 22.06.2019 15:30
Plz me ! 1 which of earths spheres contains most of its mass? a atmosphere b hydrosphere c geosphere* d biosphere 2 erosion and weathering are examples of which types of forces? a constructive forces b destructive forces* c gravitational forces d inertia-related forces 3 which of the following statements about earths atmosphere is true? a earths atmosphere contains 78% water vapor which is essentail to life b earths atmosphere contains 21% oxygen c earths atmosphere contains carbon dioxide which all life forms require d earths atmosphere allows radiation from the sun to pass through it and warm earths surface* 4 the strenght of the force of gravity between two objects is determined by which of the following factors? select all that apply a the messes of the objects* b the distance between the objects* c the volumes of the objects d the surface area of the objects 5 earth and moon are kept in there respective orbits due to the influence of a inertia b gravity c gravity and inertia* d neither gravity or inertia if you answer all questions right i will give
Answers: 1
Chemistry, 22.06.2019 16:00
How do dying stars contribute to the formation of planets
Answers: 1
What is necessary in order for astronauts to survive long trips into space?
technologies that permi...
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