Are comets made of ice?

Are comets made of ice?

They are composed of rock, dust, ice and frozen gases such as carbon monoxide, carbon dioxide, methane, and ammonia. Sometimes called dirty snowballs, recent studies have shown that the ice of a comet is covered by a crust. Comets also contain a variety of organic compounds as well as the gases already mentioned.

How many miles does someone walk in a day?

The fitness gap detected by the pedometer studies is equal to about 30 to 40 minutes of walking each day. One mile of walking covers about 2,000 steps, researchers say. The health community typically urges people to take at least 10,000 steps a day to maintain good health, which is equal to about five miles of walking.

When can you adopt a puppy?

A puppy usually goes into a new home at seven to nine weeks of age. She is ready to transfer to her “human” pack at this age. If you are adopting an older puppy (over 12 weeks) and she has had limited socialization, you may have to work harder at first.

How many cups is 200 grams of flour?

The most common dry ingredients are flour (1 cup = 150g), sugar (1 cup = 200g), brown sugar (1 cup packed = 200g), rice (1 cup = 200g), raisins (1 cup = 140g). For butter 1 tablespoon is 15g, 1 stick is 110g and 1 cup is 225g. Confectioner’s sugar is icing sugar (1 cup = 100g).

How many countries does the Nile River flow through?

The Nile is an “international” river as its water resources are shared by eleven countries, namely, Tanzania, Uganda, Rwanda, Burundi, Congo-Kinshasa, Kenya, Ethiopia, Eritrea, South Sudan, Sudan and Egypt.

Is combustion exothermic or endothermic?

Combustion reactions are almost always exothermic (i.e., they give off heat). For example when wood burns, it must do so in the presence of O2 and a lot of heat is produced: Wood as well as many common items that combust are organic (i.e., they are made up of carbon, hydrogen and oxygen).

How old is the bra?

The university said Wednesday that it found four linen bras in an Austrian castle dating back to the 1400s, proving that women wore bras more than 600 years ago. It’s such a revolutionary find because fashion experts thought the modern-day bra was only about 100 years old after women became tired of tight corsets.

What year did the Grateful Dead start?

Grateful Dead in 1970. Left to right: Bill Kreutzmann, Ron “Pigpen” McKernan, Jerry Garcia, Bob Weir, Mickey Hart, Phil Lesh. The Grateful Dead was an American rock band formed in 1965 in Palo Alto, California.