Week 2

Simulations

Matter and Energy

Atoms

Heat and Pressure

Molecular Shapes

Spectra Absorption and Reflection

Gravity

What is the Earth and how does it work?

Matter and Energy

Atoms are the basic building block of all matter. They are organized in the periodic table by number of protons. The weight of an atom is the sum of all of the protons and neutrons together in an atom. You should be able to determine the name of an atom by the number of protons it has and the weight by the total number of protons and neutrons. Practice this and answer a question in Google Classroom.

Molecules are chemically bonded collections of atoms that have different properties than the atoms that make them up. The total weight of a molecule is the sum of the atomic weights of all the atoms that make it up. Molecules can break apart and then bond with other atoms making new molecules. In this simulation, use light energy of different wavelengths to excite or break the bonds of molecules and answer the question in Google Classroom.

Matter, Heat, and Pressure

Heat and Pressure can make atoms change their motion and behavior. Use the PhET simulation to explore how this works and then answer a question in Google Classroom.

Gravity

Universal Law of Gravitation says that the distance and mass of objects determine the gravitational pull they have. When more mass is clumped together the object has more gravity. As you get closer to an object it is able to pull on you more. Experiment with the PhET simulation and answer the question in Google Classroom.

Gravity Simulator

Density

Density determines whether things float or sink and is a key principle with regard to the behavior of matter in the universe. The more matter is packed into an area, the more dense it is. Experiment with different density materials in the PhET simulation and answer the question in Google Classroom.

See if you can name all of the events happening in this brief video as they were described this week.

Earth and Space Formation

Study Guide

1. What is the beginning of the Universe called.

2. What element from the periodic table was there the most of after the creation of the Universe?

3. How and where are elements that are heavier than Hydrogen formed?

4. Which parts of an atom form first after the Universe comes into being?

5. What was the approximate size of the Universe before it expanded?

6. What happens to particles when they move faster or slower?

7. What happens to particles when they are under pressure and when pressure is released?

8. What are stars originally made of?

9. What process produces heavier elements than hydrogen and where does this happen?

10. What force in the Universe causes stars, planets, and galaxies to form?