Multiple choice

What happens to the shape of an elliptical galaxy as you move from E0 to E?

They flatten out and spirals form
They blow up
They go from round/spherical to an oval/oblong shape
They become a gas cloud

What cosmic accident is believed to from many irregularly shaped galaxies?

Two galaxies colliding
A super nova
A black hole
An exploding white dwarf

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer