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Hereof, why do spaceships go straight up?

To enter orbit, a rocket begins to tilt onto its side at first, and gradually increases this tilt until it achieves an elliptical orbit around Earth. The other advantage is that it lets the rocket use Earth's gravity, rather than its own fuel, to change its direction.

Beside above, why are rockets launched vertically? Because gravity turns the flight path during free flight, the rocket can use a smaller initial pitchover angle, giving it higher vertical velocity, and taking it out of the atmosphere more quickly. This reduces both aerodynamic drag as well as aerodynamic stress during launch.

Herein, why do rockets go up?

Forces. So when you fire up your rocket engine, that makes the force that accelerates the rocket into the sky. Rockets move upward by firing hot exhaust gas downward, rather like jet planes—or blown-up balloons from which you let the (cold) air escape.

Why does ice form on rockets?

When rockets lift off, why do fragments of ice fall off? Space shuttles use a combination of super-cooled liquid hydrogen and liquid oxygen as their fuel. As this water vapour collects and cools further it freezes into patches of ice and the intense forces during launch cause the ice chunks to fall away.