Present Simple
Every day, scientists ____ (measure) the temperature of their experiments using a thermometer.
Measure
The scientist ____ (analyze) the data from yesterday's experiment right now.
is analyzing
Yesterday, the lab assistant ____ (calibrate) the pH meter before the experiment.
calibrated
While the lab assistant ____ (weigh) the samples, the scientist ____ (prepare) the microscope.
was weighing, was preparing
This term refers to the long-term changes in temperature, precipitation, and other atmospheric conditions on Earth, often driven by human activities.
climate change
The Bunsen burner ____ (produce) heat for many lab experiments.
Produces
The students ____ (conduct) an experiment to test the acidity of different liquids.
are conducting
The experiment ____ (show) that the substance was highly reactive with water.
showed
The researchers ____ (analyze) the data when the computer suddenly ____ (freeze).
were analyzing, froze
This gas, primarily produced by burning fossil fuels, is the most abundant greenhouse gas in Earth's atmosphere.
In our lab, we ____ (use) test tubes to mix small amounts of chemicals.
Use
The laboratory team ____ (mix) chemicals in a beaker to observe any reactions.
Is mixing
Last week, the researchers ____ (conduct) a series of tests to determine the chemical properties.
conducted
While you ____ (stir) the solution, I ____ (measure) the temperature of the reaction.
were stirring, was measuring
This phenomenon occurs when certain gases trap heat in the Earth's atmosphere, leading to a warming effect commonly associated with climate change.
greenhouse effect
Researchers ____ (write) their findings in a lab notebook after each experiment.
Write
We ____ (wait) for the results of the test to appear on the computer screen.
are waiting
The chemical reaction ____ (occur) much faster than expected when the temperature increased.
occurred
The students ____ (observe) the experiment when the substance unexpectedly ____ (change) color.
were observing, changed
Although it is less abundant in the atmosphere than carbon dioxide, this greenhouse gas is over 20 times more effective at trapping heat and is mainly released by agricultural activities and livestock.
methane
The scientist always ____ (wear) gloves when handling hazardous materials.
Wears
Right now, the lab technician ____ (set) up a new centrifuge for the experiment.
Is setting
The technician ____ (disconnect) the power supply after the experiment was finished.
disconnected
The lab technician ____ (check) the equipment when the power ____ (go) out.
This international agreement, signed in 2015, aims to limit global temperature rise to below 2°C compared to pre-industrial levels, with a focus on reducing greenhouse gas emissions
Paris Agreement