What is a method to predict an earthquake?

An iron nail is made up of particles. What is true about the particles?

t's Peggy Sue's birthday and she's about to blow out the candles on her cake. Brother Roger stops the party when he shouts: "Look at that! Chemical and physical changes taking places on your birthday cake!

In which of these situations does a roller coaster have the most kinetic energy? A. climbing up the first hill B. at the top of the first hill C. half-way down the first hill D. at the bottom of the first hill

When making her coffee, Mrs. Jenkins likes to stir in some cream and sugar to give it a pleasant flavor. The ingredients, when combined like this, form a A) carbohydrate. B) compound. C) mixture. D) recipe.

An object has a mass of 50.0 g and a volume of 10.5 cm3. What is the object's density?

Why would an object float in water, but sink in rubbing alcohol?

What happens to the volume of solids, liquids, and gases when they are heated. Devise your own chart for your answer.

Which chemical compounds absorb large amounts of the sun's energy in the atmosphere? Select one: a. Nitrogen compounds, water vapor, and carbon compounds b. Carbon dioxide, water vapor, and dust c. Methane, nitrogen compounds, and dust d.

As protostars continue to contract, their cores become hotter and more dense until what process begins ...

Emily jogs 3 laps at the track to warm up. She jogs at 5 mph. Then she runs 3 more laps at 7 mph. What is true about her average speed and her average velocity?