Tiffany leaves several balloons filled with helium gas inside her car on a sunny day. When she returns to her car, some of the balloons are much larger and a few have popped. Explain what happened.

What do sound waves, light waves, and ocean waves all have in common?

Anthony walked to the pizza place for lunch. He walked 1 km east, then 1 km south and then 1 km east again. What distance did he cover? What was his displacement?

What makes a forest sustainable?

Omar wrote a hypothesis about batteries called dry cells. If more dry cells are connected end to end, a light bulb will work longer because there is more energy available.

Which of the following would be considered a pull factor? A. the lack of financial opportunities in one's home country B. political oppression in one's home country C. overpopulation in another country D. religious freedom in another country

The acceleration due to gravity is

How does gravitational force and electric force compare?

There are two types of addiction, psychological and physical. A. True B. False

What two gases probably dominated precambrian earth's atmosphere?

a fast ball travels at about 161kilometers/hr if this fast ball could keep its speed how long would it take this ball to travel 0.15 terameters?