SCIENCE-TEST 2 LAB DISCOVERY
EXAM QUESTIONS AND ANSWERS
Which description defines an experiment? - ANSWER-Procedure applied systematically
under controlled conditions
Malik investigates the force required to pull an object across a table. The data table
below shows the data he recorded.
Mass of object (kg) Force required (N)
1 0.20
2 0.41
4 0.80
8?
Based on the data, what force is required to pull the 8-KG object? - ANSWER-about
1.60 N
Which description defines a dependent variable in a scientific experiment? - ANSWER-
A factor that changes due to the independent variable
A physicist at a research laboratory reports a startling new discovery. However, other
scientists are unable to reproduce the results of the experiment. Which statement
provides the most likely possible explanation for the faulty results? - ANSWER-The data
collection was not accurate
Ricardo is preparing a science fair project about which fabrics are most absorbent. He
designs a controlled experiment. What materials will he need for his experiment? -
ANSWER-a graduate cilinder, water and a variety of fabrics
Scientific investigations include many different steps. During a scientific investigation,
which step occurs after a scientist collects data? - ANSWER-draw conclusions
Early astronomers made valid discoveries by observing the night sky with simple
telescopes. Which statement applies to these early discoveries? - ANSWER-Not all
scientific knowledge about the sky comes from experiments
Ashley conducts an investigation on the effects of water amounts for seed sprouting.
She knows that replication and replicable results are important for the quality of the
investigation. How can Ashley determine if her results are replicable? - ANSWER-
Ashley can ask other students to perform the same experiment
Scientists can use many strategies during investigations, including fieldwork, surveys,
models, and experiments. Which of these phrases best describes an experiment? -
ANSWER-Procedure with controlled conditions and test and outcome variables
EXAM QUESTIONS AND ANSWERS
Which description defines an experiment? - ANSWER-Procedure applied systematically
under controlled conditions
Malik investigates the force required to pull an object across a table. The data table
below shows the data he recorded.
Mass of object (kg) Force required (N)
1 0.20
2 0.41
4 0.80
8?
Based on the data, what force is required to pull the 8-KG object? - ANSWER-about
1.60 N
Which description defines a dependent variable in a scientific experiment? - ANSWER-
A factor that changes due to the independent variable
A physicist at a research laboratory reports a startling new discovery. However, other
scientists are unable to reproduce the results of the experiment. Which statement
provides the most likely possible explanation for the faulty results? - ANSWER-The data
collection was not accurate
Ricardo is preparing a science fair project about which fabrics are most absorbent. He
designs a controlled experiment. What materials will he need for his experiment? -
ANSWER-a graduate cilinder, water and a variety of fabrics
Scientific investigations include many different steps. During a scientific investigation,
which step occurs after a scientist collects data? - ANSWER-draw conclusions
Early astronomers made valid discoveries by observing the night sky with simple
telescopes. Which statement applies to these early discoveries? - ANSWER-Not all
scientific knowledge about the sky comes from experiments
Ashley conducts an investigation on the effects of water amounts for seed sprouting.
She knows that replication and replicable results are important for the quality of the
investigation. How can Ashley determine if her results are replicable? - ANSWER-
Ashley can ask other students to perform the same experiment
Scientists can use many strategies during investigations, including fieldwork, surveys,
models, and experiments. Which of these phrases best describes an experiment? -
ANSWER-Procedure with controlled conditions and test and outcome variables
