The zone along the southern margins of the Sahara is called the

A. Sahel.

B. Laterite.

C. Veldt.

D. Savannah.

A lunar eclipse can only happen during a (1) new moon. (2) solstice. (3) first quarter moon. (4) full moon. (5) perihelion passage of the Sun.

Which of the following can be determined by studying the spectrum of a star? the chemicals in the atmosphere of the star the motion of the star the temperature of the atmosphere of the star all of the above

What is the wavelength of a wave that travels at a speed of 3.0x10^8 m/s and has a frequency of 1.5x10^16 m/s?

Which statement correctly lists the electromagnetic waves from highest to lowest energy? Choose one answer. a. gamma rays, ultraviolet waves, microwaves b. radio waves, X-rays, ultraviolet rays c. microwaves, visible light, gamma rays d.

1. An advertisement says a car can go from 0 to 26.8 m/s in 6.2 sec. What is the average acceleration of the car?

Give the abbreviation for the unit which is equivalent to (kgm) / s2.

Which of these would be best explained by the Doppler effect? A) the change in frequency as you shorten a guitar string. B) the change in pitch heard as an ambulance approaches you. C) the change in volume as a train pulls away from the station.

What is the weight on earth of a girl with a mass of 38 kg?

50g of ice at 0°C is mixed with 50g of water at 80°C, what will be the final temperature of a mixture in degrees C?

If the Density of an object is 5.2 g/cm3, and its volume is 3.7 cm3, what is its mass