The Scientific Process
A scientist notices that ice melts faster on a metal surface than on a wooden surface.
What part of this scientific process is this an example of?
A. Making an observation
B. Asking a question
C. Proposing a hypotheis
D. Performing an experiment
A. Making an observation
What is the variable that the scientist purposely changes during an experiment?
A. Independent Variable
B. Dependent Variable
C. Controlled Variable
A. Independent Variable
A paper clip rests on top of the water without sinking. Which property of water is this?
A. Cohesion
B. Adhesion
C. Surface Tension
D. Universal Solvent
C. Surface Tension
Which of the following is the monomer of a lipid?
A. Monosaccharide
B. Fatty acid
C. Amino Acid
D. Nucleotide
B. Fatty acid
Which macromolecule is responsible for quick energy?
Carbohydrate
If I add soap to the water, then more drops will fit on the penny.
What part of this scientific process is this an example of?
A. Making an observation
B. Asking a question
C. Proposing a hypotheis
D. Performing an experiment
C. Proposing a hypotheis
What is the variable that the scientist meaures or observes during an experiment?
A. Independent Variable
B. Dependent Variable
C. Controlled Variable
B. Dependent Variable
Water forms a bead on the surface of a leaf. Which property of water is this?
A. Cohesion
B. Adhesion
C. Surface Tension
D. Universal Solvent
A. Cohesion
What is the monomer of a carbohydrate?
monosaccharide
Which macromolecule is responsible for long term energy storage and insulation?
Lipids
A student predicts that a larger magnet will attract more paper clips than a smaller magnet. The student tests both magnets and writes down the number of paper clips each one attracts.
What part of this scientific process is this an example of?
A. Making an observation
B. Asking a question
C. Proposing a hypotheis
D. Performing an experiment
D. Performing an experiment
A student notices that some paper airplanes fly farther than others. She wonders whether the type of paper affects how far a paper airplane will fly. What is the dependent variable in this experiment?
How far the paper airplane will fly
How many hydrogen atoms are in a water molecule?
Water's formula is H2O so it has TWO hydrogen atoms.
What is the monomer of a protein?
amino acid
Which macromolecule is responsible for providing structure and support to your skin, hair and nails?
collagen & keratin are proteins responsible for providing structure and support to skin, hair and nails
True or False: In the scientific process, answers are based on evidence instead of personal beliefs.
True
A student tests whether the number of batteries in a flashlight affects its brightness. Identify the independent and dependent variables in this experiment.
Independent variable= number of batteries
Dependent variable= brightness of the flashlight
When honey was stirred into a cup of water, it dissolves. What property of water is this?
Universal Solvent
What is the definition of a polymer?
a large molecule made up of many single molecules (monomers) joined together.
Provide an example of a food that is primarily carbohydrates, a food that is primarily lipids, and a food that is primarily protein.
Carbohydrates: rice, pasta, potatoes,
Lipids: oil, butter, avocados, nuts
Protein: chicken, beef, tofu, eggs
What does the word iterate mean?
Repeat the process after reflecting on your results.
A student investigates whether different brands of paper towels absorb different amounts of water. Identify ONE variable in this experiment that should be kept the same so that the experiment is fair.
Possible Answers:
Size of the paper towel
Amount of water available
Time allowed for absorption
Which of the following explains why a water molecule is polar?
A. It has 2 hydrogen atoms and 1 oxygen atom
B. It has electrons shared unequally
C. It has 1 hydrogen atom and 2 oxygen atoms
D. It has electrons shared equally
B. It has electrons shared unequally
What are the two types of nucleic acids found in cells?
DNA & RNA
What type of macromolecule is an enzyme and what is the function of enzymes?
Enzymes are proteins and their function is to speed up chemical reactions