Match the words in the left-hand column to the appropriate blanks in the sentences in the right-hand column. Use each word only once.
1. Our solar system was created by the gravitational collapse of the ________.
2. Our Moon was most likely formed by a collision between Earth and a Mars-sized _____.
3. The first few hundred million years of the solar system's history were the time of the _____, during which Earth suffered many large impacts.
4. Mars was formed by the ____ of smaller objects.
5. The era of planet formation ended when the remaining hydrogen and helium gas of the solar nebula was swept into interstellar space by the _____.
6. Ice can form from a gas through the process of _____.
7. Hydrogen compounds in the solar system can condense into ices only beyond the _______.
8. _______ allows us to determine the age of a solid rock.
Answer:
1. solar nebula
2. planetesimal
3. heavy bombardment
4. accretion
5. solar wind
6. condensation
7. frost line
8. Radiometric dating
You might also like to view...
Terminal Voltage and Internal Resistance: A battery you buy at the store has an internal emf of 3.0 V. If it has an internal resistance of 14.0 ?, that current will this battery put out if it is short-circuited?
A. 0.21 A B. 42 A C. 4.7 A D. 130 A
The captain of spaceship A observes enemy spaceship E escaping with a relative velocity of 0.48c, as shown in the figure. A missile M is fired from ship A, with a velocity of 0.72c relative to ship A
What is the relative velocity of approach of missile M, observed by the crew on ship E? A) 0.37c B) 0.24c C) 0.34c D) 0.30c E) 0.27c
A 1000-kg car approaches an intersection traveling north at 20.0 m/s. A 1200-kg car approaches the same intersection traveling east at 22.0 m/s. The two cars collide at the intersection and lock together
Ignoring any external forces that act on the cars during the collision, what is the velocity of the cars immediately after the collision? A) 29.7 m/s in a direction 47.7° east of north B) 21.1 m/s in a direction 47.7° west of south C) 15.1 m/s in a direction 52.8° east of north D) 21.1 m/s in a direction 52.8° east of north E) 21.1 m/s in a direction 47.7° east of north
A one-kilogram gold ingot is carried from the bottom of the Eiffel tower to the top, 300 m above ground level. By what amount does its mass change?
A) Its mass does not change. B) Its mass increases by 3.27 × 10-14 kg. C) Its mass decreases by 3.27 × 10-14 kg. D) Its mass increases by 1.64 × 10-14 kg. E) Its mass decreases by 1.64 × 10-14 kg.