Basic physics on the exam
Before you read
Test yourself first: 5 questions
Question 1 of 5
Sound travels through the air as:
Answer: B. Sound is a vibration that travels through a medium (like air) as waves.
Question 2 of 5
We see lightning before we hear thunder because:
Answer: B. Light travels much faster than sound, so we see the flash before hearing the thunder.
Question 3 of 5
Which part of the eye adjusts the size of the pupil to control light entering?
Answer: B. The iris is the colored muscle that widens or narrows the pupil to regulate incoming light.
Question 4 of 5
The light-sensitive layer at the back of the eye is the:
Answer: B. The retina contains rods and cones that detect light and send signals to the brain.
Question 5 of 5
The part of the inner ear responsible for hearing is the:
Answer: B. The cochlea converts sound vibrations into nerve signals the brain interprets as sound.
Keep the streak going with more questions like these, each with a full rationale.
