LET General Sciences Practice Test

Question 1 Modern Physics

According to the effects of length contraction, from the viewpoint of an observer stationary with respect to a body moving at a uniform speed relative to the observer, which one is CORRECT?

A The body is not now contracted but would contract if it were to accelerate. B The time it takes for a clock incorporated in the body to tick contracts. C The body contracts along the direction of the motion. D The body contracts in some direction transverse to the direction of its motion.

Question 2 Earth and Space Astronomy and Environment

What can happen to global temperatures for several years after a volcanic eruption?

A Temperatures may increase B Temperatures may decrease C Temperatures can create more volcanoes D Temperatures are not affected by volcanic eruption

Question 3 Modern Physics

Albert Einstein's Second Postulate of Special Relativity states that the speed of light ________.

A is constant regardless of the speed of the observer or the light source. B randomly changes depending upon its original light source. C can increase if the speed of the light source increases. D can decrease if the speed of the observer decreases.

Question 4 Earth and Space Astronomy and Environment

Which of the following is/are natural factors that may disrupt the water cycle?

A Water pollution B No rainfall C Mismanaged domestic and industrial use of water D Drying of groundwater

Question 5 Physical Quantities and Vectors

Which description below shows the fastest runner?

A The one with the longest recorded time. B The one with the farthest distance travelled. C The one with the farthest distance travelled at longer recorded time. D The one with the farthest distance travelled at shorter recorded time.

General Sciences Practice Test

According to the effects of length contraction, from the viewpoint of an observer stationary with respect to a body moving at a uniform speed relative to the observer, which one is CORRECT?

What can happen to global temperatures for several years after a volcanic eruption?

Albert Einstein's Second Postulate of Special Relativity states that the speed of light ________.

Which of the following is/are natural factors that may disrupt the water cycle?

Which description below shows the fastest runner?

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