Hypothesis
Is this the formation of a hypothesis? True or False
Format for a Hypothesis:
“If (DV) then (IV) “
IV = Dependent variable = Cause
DV = Independent variable = Effect
False the correct format is:
“If (IV) then (DV) “
IV = Independent variable = Cause
DV = Dependent variable = Effect
Identify which is precise and which is accurate?
1. How close your measurements are to each other
2. How close your measurement is to the correct/accepted value
1. Precise
2. Accurate
Where are carbohydrates found in?
Sugars and Starches
True of False: water is less dense as a solid
True
When placed in water, oil does not dissolve and stays separate. This means oil is ? and ? .
A. hydrophilic and polar
B. hydrophilic and nonpolar
C. hydrophobic and polar
D. hydrophobic and nonpolar
hydrophobic and nonpolar
In a hypothesis the __________________ variable is what is being tested, while the _________________ variable is the one being measured in response.
A. control; dependent
B. independent; control
C. dependent; independent
D. independent; dependent
D. independent; dependent
Identify which is observation and which in inference?
1.Description of something you can see, smell, touch, taste, and hear
2. A guess about an object or outcome base on your observations
1. Observation
2. Inference
If available, the body will always digest which macromolecule for energy first?
A. lipids
B. proteins
C. enzymes
D. carbohydrates
D. Carbohydrates
What is adhesion? And how does it relate to the properties of water?
Adhesion is the type of attraction that happens between two different molecules.
Life can exist under frozen surfaces in polar seas because…
A. water is less dense as a solid.
C. water has a high surface tension.
B. water is a terrific solvent.
D. water has a high specific heat.
A. water is less dense as a solid.
What is usually represented on the Y-axis of a graph and us usually presented by the data you collect in an investigation; what is measured?
Dependent variable
Ada and Elijah have decided to do an experiment testing how sunlight affects plant growth. The students choose the same type of plants, soil, pots and amount of water they give the plants. They also make sure each plant is put in their designated area for the same amount of time each day. One plant is placed outside; one in front of a window that only gets light for 1/2 the day, and one in a closet. The students collect data every day for two weeks. Their results show that the plant outside grew the most and the plant in the closet had the least amount of growth.
What are the constant variables that Ada and Elijah used in their experiment?
A. type of plants C. the amount of light
B. type of soil D. A and B
D. A and B
What are the 4 macromolecules that are necessary for life?
Carbohydrates, lipids, proteins, and nucleic acid
What does it mean when water has a high specific heat?
A. the temperature of the water does not change easily
B. the temperature of the water does change easily
C. the temperature of the water fluctuates temperatures easily
D. the temperature of the water stays the same
A. the temperature of the water does not change easily
Which of the following terms represents the smallest part of an element that still has the properties of that element?
A. Cell
B. Matter
C. Atom
D. Molecule
C. Atom
Identify the IV and DV from the sentence.
1. If three plants are placed under different lights, then the plant under the green light will grow the most and the plant under the blue light will grow the least.
2. If three eggs are placed in samples of water with different amounts of sugar, then each will absorb a different amount of water over 24 hours
1.
IV: Color of Light
DV: Plant growth
2.
IV : amount of sugar
DV: amount of water absorbed
What are control groups?
a. group used for comparisons with your experimental groups. This is the "normal" group
b. groups that are being tested
c. the aspect of an experiment that are held constant of consistent
d. all of the above?
a. group used for comparisons with your experimental groups. This is the "normal" group
Which category of carbon-based molecules includes sugars and starches?
A. unsaturated fatty acids C. phospholipids
B. proteins D. carbohydrates
D. Carbohydrates
What does cohesion mean and how does it relate to properties of water?
Cohesion means together, its the attraction between molecules of the same substance.
Guam: on average a person will eat 16 cans of spam a year
Hawaii:on average a person will eat 5 cans of spam a year in Hawaii
When designing an experiment, scientists will test a relationship between a “cause” and an “effect.” The “effect,” also represented by what the scientist measures and records, is known as the
A. dependent variable
B. constant
C. independent variable
D. control group
A. dependent variable
What was our control group and experimental group in our lab we did this week?
Control: Samples of hands that had no disinfectant
The macromolecules that make up the majority of the cell membrane’s structure are .
A. lipids
B. proteins
C. enzymes
D. carbohydrates
A. Lipids
I am using a powder lemonade packet to make lemonade.
Identify what is the solution, solute, and solvent.
Solvent: Water
Solute: lemonade powder
Solution: Lemonade
Who is the highest paid actor currently?
A. George Clooney
B. Dwayne Johnson
C. Robert Downey Jr.
D. Chris Hemsworth
George Clooney$239 million
Dwayne Johnson$124 million
Robert Downey Jr.$81 million
Chris Hemsworth$64.5 million