Question: Answer the following question given this paragraph: Gravity keeps the Moon orbiting Earth. Gravity keeps the planets orbiting the Sun. Q: What keeps the moon orbiting earth? Choices: - Coriolis effect - the Sun - axial tilt - gravity A:
Answer: gravity

Question: Answer the following question given this paragraph: Winter solstice for the Northern Hemisphere happens on December 21 or 22. The North Pole of Earth's axis points away from the Sun ( Figure below ). Light from the Sun is spread out over a larger area. With fewer daylight hours in winter, there is also less time for the Sun to warm the area. When it is winter in the Northern Hemisphere, it is summer in the Southern Hemisphere. Q: What season is it in the southern hemisphere when it's winter in the northern? Choices: - Winter - Spring - autumn - summer A:
Answer: summer

Question: Answer the following question given this paragraph: Mountain streams may erode waterfalls. As shown in Figure below , a waterfall forms where a stream flows from an area of harder to softer rock. The water erodes the softer rock faster than the harder rock. This causes the stream bed to drop down, like a step, creating a waterfall. As erosion continues, the waterfall gradually moves upstream. Q: When a stream flows from a hard to soft rock area, what is often formed? Choices: - a lake - a river - a riverbank - a waterfall A:
Answer:
a waterfall