70022221 7th UIL Science I Invitational 16-17

Front

Energy is transformed all around us. Batteries convert chemical potential energy to electric energy. Similarly, autotrophs convert light energy into chemical energy through

Back

photosynthesis

Front

The completion of chemical digestion in the small intestine depends on three of the following organs. Which does not help in this? (Options: Pancreas, liver, esophagus, gall bladder)

Back

esophagus

Front

Which carbohydrate is not digestible and provides fiber in your diet? Options: sucrose, glycogen, starch, cellulose

Back

cellulose

Front

Which of the following is the scientific definition of work? Options: earning money, a force applied through a distance, continuous movement of electrons through a conductor, applying for a job

Back

a force applied through a distance

Front

Which is evidence that much of thermal energy is never converted into mechanical energy? Options: a car engine getting hot when operated, plants converting light into chemical potential energy, eating an apple, washing clothes

Back

a car engine getting hot when operated

Front

Coastal flooding from a hurricane can cause significant damage to freshwater areas. Which of these situations best applies to this? Options: change in osmotic pressure due to the increased salt in soil, floodwaters eroding soil, ash and tephra covering the landscape, strong winds damage forests

Back

change in osmotic pressure due to the increased salt in soil

Front

Identify the physical type of weathering: icicle-shaped rock formations in caves, acid rain falling on limestone rocks, water smoothing and sculpting rocks, oxidation of rocks.

Back

water smoothing and sculpting rocks

Front

How the population is distributed across the landscape may be a factor in the availability of groundwater as well as its quality. Which of these directly relates to the groundwater quality?

Back

higher concentrations of people can pose greater threat to groundwater quality and quantity.

Front

Some of the gases in our atmosphere fluctuate. Which of the following shows a gas that changes? nitrogen, oxygen, carbon dioxide, argon

Back

carbon dioxide

Front

One accommodation for manned space exploration is exercise. Why is this necessary?

Back

keeps bones dense