How many nano-meters thick is a nickel

When gravity overcomes the nuclear energy in a red supergiant, the star begins to collapse, leading to a massive explosion that can be visible for months-?

For a satellite to stay in orbit around Earth, it has to be moving forward very fast all the time. What force will make it fall to Earth if it goes too slowly?

Compare the current atmospheres of Earth, Venus, and Mars in terms of composition, thickness (and pressure at the surface), and the greenhouse effect.

Suppose you are biking side by side with a friend. Write a short explanation that describes the motion of your friend? What information are you using to describe that motion?

1. Go onto the Newsround website or article 2. Search "School girl banned for Muslim dress" Answer this question: Who is Sobia?

Six light bulbs are connected in series with a 9.0 volt battery. What is the voltage across each bulb?

Can an object travel at the speed of light? Why or why not?

It's a hot and sunny day and you decide to go for a drive. When you open your car door, it's a lot hotter than outside. Why is that

Which compound is composed of oppositely charged ions

Sara, who weighs 66 kg, is on a guilt trip after eating a 788-Calorie (788 kcal) breakfast of pancakes loaded with fruits, cream, and syrup. She decides to work out before going to her weekly weight-watchers' meeting.