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
Other questions on the subject: Chemistry
Chemistry, 21.06.2019 22:30, officialgraciela67
Embryos of different species look very similar, which shows that the organisms share a ancestor.
Answers: 1
Chemistry, 22.06.2019 01:30, elizediax8683
(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?
Answers: 1
Chemistry, 22.06.2019 05:40, Maryjasmine8001
Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml
Answers: 2
Do you know the correct answer?
What is necessary in order for astronauts to survive long trips into space?
technologies that permi...
Questions in other subjects:
Spanish, 07.05.2021 20:20
Mathematics, 07.05.2021 20:20
