Motion and Stability
Matter is pulled to the ground by .
2. gravity
What is energy?
Plant Cells Have a Cell Wall, True or False?
True
What is the diagram that predicts the possible genotypes and phenotypes of offspring from two parents?
A Punnet Square
Rain, Sleet, and Snow are all examples of what?
Precipitation
What is a force?
A force is a push or pull that can cause an object to start moving, stop moving, or change its direction.
What are the 2 main types of energy?
Potential and Kinetic Energy
In Eukaryotic Cells, which organelle contains the DNA?
A. Nucleus
B. Golgi Complex
C. Smooth ER
D. Vacuole
A. Nucleus
What are alleles?
An allele is a variant or version of a gene that codes for a specific trait.
What is the most abundant gas in the atmosphere?
A. Oxygen
B. Hydrogen
C. Nitrogen
D.Carbon Dioxide
C. Nitrogen
Gravity and friction are two kinds of .
A light bulb is turned on. Describe the energy transformations that occur.
Electrical energy from the power source is transformed into light energy and heat energy.
Which of the following organisms cells do not contain a nucleus?
A. Prokaryotes and Eukaryotes B. Plants and animals
C. Eubacteria and Archaebacteria D. Single celled and multicellular organisms
C. Eubacteria and Archaebacteria
What are genes?
The basic unit of heredity passed from parent to child.
The bottom layer of the atmosphere, where all weather occurs, is what?
A. Stratosphere
B. Troposphere
C. Thermosphere
D. Mesosphere
B. Troposphere
The formula for calculating speed is what?
speed = distance / time (or s = d/t).
What is kinetic energy? What is an example?
Kinetic energy is simply the energy an object has because it's moving. An example is a ball rolling down a hill.
What is an example of a molecule?
How are traits passed from parents to offspring?
Traits are passed from parents to offspring through heredity, or the transmission of genetic information contained in genes.
What is the main cause of temperature changes in the atmosphere?
The primary driver of temperature changes in the Earth's atmosphere is the increase in greenhouse gas concentrations, primarily carbon dioxide (CO2), due to human activities like burning fossil fuels and deforestation.
A hockey puck is sliding across a frictionless ice rink. According to Newton's First Law, what will happen to the puck if no other forces act on it?
The puck will continue moving in a straight line at a constant speed (or remain at rest if it was initially at rest).
A student is riding a bicycle uphill. Describe the energy transformations that are occurring, from the time the student starts pedaling until they reach the top of the hill.
The student's chemical energy (from food) is transformed into kinetic energy (movement of the pedals and legs), which then becomes mechanical energy (turning the wheels), and finally into gravitational potential energy (as the bicycle gains height). There is also some energy lost to friction and heat.
What is the purpose of the cell membrane?
The purpose is to act as a selective barrier, protecting the cell's contents while regulating the passage of substances in and out.
What is the difference between genotype and phenotype?
Genotype is an organism's genetic makeup, while phenotype is the observable characteristics or traits resulting from the interaction of those genes with the environment.
Explain why air rises when it is heated.
When air is heated, its molecules move faster and spread out, causing the air to expand and become less dense than the surrounding cooler air. Less dense air rises and the denser air sinks.