Answer:
According to the NEBULAR model, the solar system formed from a cloud of dust and gas.
Explanation:
According to Nebular model, the solar system was formed from molecular cloud of dust and gases. The material accreted and collapsed under its own weight. The rotating core gathered more mass increasing its temperature and pressure until nuclear fusion reaction started and Sun was born. The rest of the material flattened into disk from which planets were formed.
b. modern theory on the formations of the continents
c. precise observations of human anatomy
d. ideas for space travel
Answer: Option d: ideas of space travel.
Explanation:
Leonardo da Vinci was an Italian. He had numerous skills in various different fields. Leonardo contributed to technology for the effect of moon on the tides, his theory on formation of continents, human anatomy, art and much more. But he did not contribute in the ideas for space travel. Hence, the correct option is d.
Answer:D
Explanation:
Behaviorists are unlikely to perceive cognition as part of learning because they believed that learners respond to stimulus. It is the negative and the positive reinforcement that the learners receive that shape their behaviors or responses to certain stimuli and not cognition.
Answer:
Cognition is unobservable.
Explanation:
b. the same
c. longer
Answer:
A. shorter
Explanation:
I just took the test.
Answer:
work done by fuel is chemical energy and work done by moving objects is kinetic energy
Explanation:
when work is done by object that object gains energy . when the work is done by an object that object loses energy because it is transferring it to something else .
Answer:
work done by fuel is conversion of chemical energy into mechanical whereas work done by moving object is due to its displacement by the application of force. actually, both of them give same meaning
when plucked?
A Loosening the string
B Tightening the string
C Shortening the string
D Using a heavier string