Question

question 4 (1 point)
after _?_ years of trying, venera 13 begins its perilous descent. on the 1st of march, 1982, the _?_ take the first color photograph
of the venusian surface.
o a 10/americans
o b 20/soviets
o c 30/chinese
o d 40/french

question 5 (1 point)
larger gas giants formed closer to the sun, and rocky planets farther out.
o true
o false

question 6 (1 point)
mars has a harder time holding onto its original atmosphere. the molten _?_ core in its center is too small to retain its heat: it
cools and solidifies, shutting off the smaller worlds protective magnetic field.
o a nickel
o b aluminum
o c titanium
o d iron

Explanation:

• Question 4: The Venera program was a Soviet (Union of Soviet Socialist Republics) space exploration program. The first Venera mission was in 1961, and Venera 13 was launched in 1981. So after about 20 years of trying (1981 - 1961 = 20), and it was the Soviets (Soviets) who were behind the Venera missions.
• Question 5: In our solar - system formation, rocky planets (terrestrial planets like Mercury, Venus, Earth, Mars) formed closer to the Sun, and gas giants (like Jupiter, Saturn, Uranus, Neptune) formed farther out. So the statement "Larger gas giants formed closer to the Sun, and rocky planets farther out" is false.
• Question 6: Mars' core is mainly composed of iron. A planet's magnetic field is often related to the movement of molten metal in its core. Iron is a key component for generating a magnetic field (through the dynamo effect).

Answer:

• Question 4: B. 20/Soviets
• Question 5: False
• Question 6: D. iron