GIZMOS Student Exploration

[Note to teachers and students: This Gizmo was designed as a follow-up to the Nuclear Decay Gizmo. We recommend doing that activity before trying this one. Vocabulary: chain reaction, CNO cycle, catalyst, deuterium, electron volt, fission, fusion, isotope, nuclear reaction, positron, positron emission, proton-proton chain Prior Knowledge Questions (Do these BEFORE using the Gizmo.) The chart to the right gives the isotope name, element name, number of protons, and number of neutrons of ...

Vocabulary: allele, genotype, Hardy-Weinberg equation, Hardy-Weinberg principle, heterozygous, homozygous, Punnett square Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Suppose the feather color of a bird is controlled by two alleles, D and d. The D allele results in dark feathers, while the d allele results in lighter feathers. 1. Suppose two Dd birds mate. What percentages of DD, Dd, and dd offspring would you predict? Use the Punnett square at right to

Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary: effort, load, mechanical advantage, pulley, pulley system Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Suppose you had to haul a heavy bucket of water from a deep well. Which way do you think would be easiest for lifting the bucket? Highlight your answer. a. One person lifting the bucket. b. Two people lifting the bucket. c. Fo...

Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary: density, mass, matter, volume Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. List three objects that you think would sink in water, and three objects you think would float. Sink: An egg, a penny, and a rock. Float: A ping pong ball, an air-filled balloon, a boat 2. Why do you think some things float and some things sink? Some things floa...

Vocabulary: allele, codominance, dominant, genotype, heterozygous, homozygous, phenotype, probability, Punnett square, recessive, trial Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. The image shows a flower that was produced by crossing a pure red flower with a pure white flower. Which do you think is the dominant petal color: red or white? Explain. _____________________________________________ _____________________________________________ ___________________________...

Vocabulary: Avogadro’s number, balanced equation, cancel, coefficient, conversion factor, dimensional analysis, molar mass, mole, molecular mass, stoichiometry Activity A: Moles Get the Gizmo ready: ● Check that the equation is still: Fe2O3 + 3CO 2Fe + 3CO2 ● If not, click New equation until it reappears. Question: How do scientists find the molecular mass and molar mass of a substance? 1. Calculate: The molecular mass of a molecule is the sum of the masses of each atom in the mo...

Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary: attract, bar magnet, ferromagnetic, magnetize, north pole, repel, south pole Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What happens when you place two magnets close together? They attract or repel. 2. What objects do magnets stick to? Make a list. Metal, iron, nickel 3. What do these objects have in common? They’re found on ea...

Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary: dipole, dipole-dipole force, dipole-induced dipole force, electronegativity, intermolecular force, ionic bond, London dispersion force, molecule, nonpolar, nonpolar covalent bond, partial charges, polar, polar covalent bond, valence electron Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. A big bully is having a tug-of-war with a small chil...

GIZMOS STUDENT EXPLORATION THE BIG BANG THEORY MATHS CALCULATION WITH REFERENCING QUESTIONS AND ANSWERS EXAM The distance between Earth and Mars is 225 million km. When converted using the conversion factor 1 AU = 1.5 × 108 km, the distance between the planets is [0.2 AU/1.5 AU/2.0 AU]. The astronomical unit (AU) is [shorter than/longer than/the same as] a lightyear. - 1.5 AU SHORTER THAN Drag each tile to the correct location. A scientist is studying the light emitted by several celes...