8th Grade Nine Weeks Quiz

Which muscle in the eye controls the pupil?

• Retina

• Sclera

• Iris

• Aqueous Humor

If an object allows no light through, then it is said to be

• Transparent

• Opaque

• Translucent

What does a straight horizontal line on a distance/time graph mean?

• It means they have a constant speed

• It means they are not moving

• It means that the speed is steadily increasing

• It means that the speed is steadily decreasing

A cheetah runs 100 meters in 5 seconds. What is its speed?

• 10 m/s

• 20 m/s

• 500 m/s

• 50 m/s

The top of a transverse wave is called the

• Trough

• Rarefaction

• Crest

• Amplitude

Which wave has the greatest energy on the EM Spectrum?

• X-rays

• Gamma Rays

• Infrared Waves

• Microwaves

I was riding my bike at 4 m/s when a dog chased me. So I increased my speed to 8 m/s in 4 seconds. What was my rate of acceleration?

• 1 m/s²

• 4 m/s²

• -1 m/s²

• -4 m/s²

The speed of light in glass is

• 197,000 km/s

• 45,000 km/s

• 300,000 km/s

• 400,000 km/s

What are the 3 primary colors?

• Yellow, Blue, Green

• Red, Green, Blue

• Red, Cyan, Yellow

• Magenta, Blue, Yellow

The measure of a wave from one crest to another crest is called the

• Wavelength

• Amplitude

• Frequency

• Crest²