Semester 1 Exam 8th grade science

Front

What happens to a scientific model when new evidence contradicts previous understanding?

Back

Scientists will adapt the model to fit with new evidence.

Front

What is the temperature of the newly discovered orange star?

Back

4,000 K.

Front

What is the density of an object with a mass of 110 g and a volume of 10 cm³?

Back

11 g/cm³.

Front

What are the cooler regions of strong magnetic activity on the surface of the sun called?

Back

Sunspots.

Front

What term describes the movement of matter due to temperature differences in the sun?

Back

Convection.

Front

What is the definition of density?

Back

Density is the mass of an object divided by its volume.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.

Front

What is a star similar to Aldebaran?

Back

A new star that is orange and 4,000 K.

Front

What are solar flares?

Back

Solar flares are sudden eruptions of energy on the sun's surface.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids.