What indicates that an area in the Northern Hemisphere is experiencing summer? The Sun is at its lowest point in the sky.
The Sun is directly over Earth’s north end.
The Northern Hemisphere receives fewer direct rays from the Sun.
The northern end of Earth’s axis is tilted away from the Sun.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of