Space travel - JSS1 Basic science Past Questions and Answers - page 2

Force is a push or pull that can change the state of motion or shape of an object. It can cause objects to move, accelerate, or change direction.

Gravity is the force that pulls objects towards each other, such as keeping us on the ground and planets in orbit around the sun. Electromagnetism includes both attraction and repulsion between charged particles, like what holds electrons in orbit around atomic nuclei.

Scientists conduct space travel missions for various purposes, including exploration, scientific research, satellite deployment, and potential colonization of other celestial bodies.

Space travel offers benefits such as technological advancements, scientific discoveries, and a better understanding of our universe.

Dangers of space travel include exposure to radiation, isolation, and the challenges of surviving in the harsh environment of space.

Weak nuclear force is responsible for certain types of radioactive decay, while strong nuclear force holds the nucleus of an atom together by overcoming the repulsion between positively charged protons.