Tutor profile: Kimberly R.
Subject: Earth Science
What is a nebula?
A nebula is a HUGE cloud of gas and dust in space. They are often called "star nurseries." Stars are born in them! Over time gravity can pull all that dust and gas together until eventually it forms into a star.
Subject: Basic Chemistry
What does it mean to balance an equation?
Balancing an equation means making sure you have the same number of atoms at the end of a chemical reaction as you did when you started. It involves just a little math, but I can break it down into easy steps for you! Let's look at some examples.
Subject: Physical Science
How do I know if something has potential energy or kinetic energy?
If something has potential energy, it isn't moving yet - it's being held back by some force. This could be a table holding up a book or an object on a coiled up spring that will push the object once it's released. If something has kinetic energy, it's moving! Think of a baseball flying through the air.
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