FOR FISSION:
Answer:
A, B, D, E
Explanation:
These are the correct answers.
The answer is D. an ice wedging in Rock
Mainly because that is a Mechanical reaction or Physical
Answer: C. A force applied to the cart pushing or pulling it forward
Explanation: (I hope this is correct)
alpha decay is an emission of ₂⁴He
nucleus. If an element undergoes an alpha decay, the mass of the daughter
nucleus formed is reduced by 4 compared to mass of parent atom and atomic
number is reduced by 2 compared to atomic number of parent atom.
Let's assume that the parent atom is X, atomic number is z and mass number is A. Then the formed daughter nucleus, Y should have atomic number as z-2 and mass number as A-4.
The equation is
(z) (A)X → ₂⁴α + (z-2)(A-4)Y
Example:
₉₄²³⁹Pu → ₂⁴α + ₉₂<span>²³⁵U</span>
Answer: within the Earth’s atmosphere, heat is transferred mostly by convention. When the air near the ground is heated, its particles move more rapidly. These particles bump into each other and move further apart. The air becomesless dense. Cooler, denser air sinks towards the surface, forcing the warmer, less dense air to rise. The upward movement of the warmer air and the downward movement of the cooler air forms convection currents.
Explanation: