Harvard Junior High

Introduction: An organism’s traits, or characteristics, are controlled by genes. Genes are located on rod-like structures called chromosomes. Different versions of genes that code for the same trait are called alleles. In this Gizmo, there are 3 genes on each chromosome. For each gene there are eight possible alleles: W (white), R (red), G (green), B (blue), C (cyan), M (magenta), Y (yellow), and K (black). Question: Where does variation in a population come from? 1. Observe: Click on on...

1. Record: Click Fire. The lamp emits photons of 1 eV, 2 eV, and so on up to 20 eV. The EL Photon Detector Display shows the photons that pass directly through the gas. Any missing photons were absorbed by the gas before being reemitted at various angles. Which photon energies were absorbed by Gas A? 2. Observe: Select the Laser on the left and the ORBITALS tab on the right. Set the Energy (eV) to 4 eV. The atom model at right, called the Bohr model, shows the nucleus of the atom as a purp...

Question: How does alpha decay change the nucleus of a radioactive atom? 1. Predict: As you observed in the warm-up activity, an alpha particle consists of two protons and two neutrons. How will the emission of an alpha particle affect the following? A. The atomic number of the atom: the atomic number will go down B. The mass number of the atom: the mass number will go down 2. Calculate: Turn on Write equation. What you see is an equation that shows the original uranium atom on the left. T...

Program with C_ Learn to Program using the Popular C Programming Language

Python Programming. Python Programming for Beginners, Python Programming for Intermediates