FREE CMAS Science Questions and Answers

Question 1

Curtains in theaters prevent sound waves from being reflected as echoes. Which model best explains why curtains prevent echoes?

Accepted Answer

A ball dropped on a surface will bounce more on a hard surface than
on a soft surface.

Answer

A ball thrown toward a surface will come in contact faster with a soft
surface than with a hard surface.

Answer

A ball thrown at a surface will hit with a greater force on a soft
surface than on a hard surface.

Answer

A ball rolled across a surface will roll more quickly on a hard surface
than on a soft surface.

Question 2

Which of the following moons of Jupiter is the closest to the planet?

Accepted Answer

Io

Answer

Callisto

Answer

Ganymede

Answer

Europa

Question 3

What forces are primarily responsible for keeping the globe floating in place over its base?

Accepted Answer

Magnetic force and gravitational force

Answer

Gravitational force and magnetic force

Answer

Frictional force and electrical force

Answer

Gravitational force and frictional force

Question 4

What principle explains why the falling magnets are pushed back up by the magnets at the bottom of the rod?

Accepted Answer

Magnetic repulsion

Answer

Friction

Answer

Gravitational attraction

Answer

Electrical force

Question 5

What was the primary purpose of the Voyager 2 mission as indicated by its trajectory through the solar system?

Accepted Answer

To study the outer planets and their moons

Answer

To establish a permanent base on Mars

Answer

To search for extraterrestrial life

Answer

To map the entire solar system