Question

1. which season is it in the southern hemisphere when the suns rays strike most directly?

a. spring
b. summer
c. autumn
d. winter

1. scientists have discovered a new planet. the amount of time in one day on this planet would be determined by

a. its radius
b. the tilt of its axis
c. its period of rotation
d. its period of revolution

1. scientists want to determine if a newly discovered planet has seasons that are similar to the season on earth. which information will most likely help scientists make this determination?

a. the age of the planet
b. the tilt of the axis of the planet
c. the amount of time it take to make one revolution
d. the amount of time it takes to make one rotation

Explanation:

18.

When the sun's rays strike most directly in the Southern Hemisphere, it is summer. This is because direct sunlight leads to more intense heating, similar to how in the Northern Hemisphere, direct sunlight in June (summer solstice) causes summer.

The period of rotation of a planet determines the length of its day. Rotation is the spinning of a planet around its axis. For example, Earth's rotation period (about 24 hours) gives us a day - night cycle.

On Earth, seasons are caused by the tilt of its axis. If a planet has a similar tilt of its axis, it is likely to have seasons similar to Earth. The tilt causes different hemispheres to receive more or less direct sunlight at different times of the planet's revolution around its star.

Answer:

b. summer

19.