Tools and Technology Answers
15 verified answers1 views
21
Free Preview
Which best blocks X-ray particles and can therefore be observed more closely through the use of this technology?
A
organsB
musclesC
fluidsD
bones22
Free Preview
View the model of the United States. Which is a likely limitation of this model?
A
It does not show which countries are to the north and south.B
It does not show America’s major rivers.C
It does not show mountainous regions.D
It does not show the oceans surrounding America.23
When people look through a telescope, air currents in the Earth’s atmosphere can distort the images they see. In the 1950s, a scientist named H. W. Babcock thought of a way to reduce this distortion by using a special device within the telescope. However, this device was not used until the 1990s.Which best explains why Babcock’s idea took many years to become a reality?
A
Scientists started using electron microscopes instead.B
Scientific telescopes were already using advanced technology.C
Scientific ideas often have to wait until advancements in technology make the ideas possible.D
Scientists often feel their ideas place an unnecessary burden on the research to develop telescopes.24
Which elements do hydrogen fuel cells combine to produce electricity?
A
hydrogen and oxygenB
hydrogen and carbonC
hydrogen, oxygen, and nitrogenD
hydrogen, carbon, and nitrogenDid you find these answers helpful?
Verified answers available
TRY EDGENUITY HACKS
- Auto Complete Exams
- Auto Complete Assignments
- Skip Videos Instantly
50,000+ students using this