The Big Bang Theory, describing the creation of the universe, is most likely supported by what evidence? A The apparent shape of star constellations.
B The presence of craters on Earth's moon.
C The presence of volcanoes on Earth.
The red shift of light from distant galaxies.

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2