Unit 1 Earth Science

Front

What is nuclear fusion?

Back

Nuclear fusion is a process where two light atomic nuclei combine to form a heavier nucleus, releasing energy in the process. It is the process that powers stars, including our sun.

Front

How many hydrogen atoms are needed to fuse into one helium atom?

Back

4 hydrogen atoms are required to fuse into one helium atom.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion that occurs at the end of a star's life cycle, particularly for massive stars. It results in the ejection of the star's outer layers.

Front

What is a dependent variable?

Back

A dependent variable is the variable that is measured or observed in an experiment. It is affected by changes in the independent variable.

Front

What is an independent variable?

Back

An independent variable is the variable that is changed or controlled in an experiment to test its effects on the dependent variable.

Front

How does the sun provide energy to the Earth?

Back

The sun provides energy to the Earth through nuclear fusion, which produces light and heat.

Front

What is the role of salt concentration in plant growth experiments?

Back

Salt concentration is the independent variable that is manipulated to observe its effect on the growth of plants.

Front

What is the significance of measuring fish body fat in an experiment?

Back

Measuring fish body fat is significant as it serves as the dependent variable, indicating the effect of different feeding frequencies.

Front

What happens during a supernova?

Back

During a supernova, a star explodes, releasing a vast amount of energy and often forming a neutron star or black hole.

Front

What is the relationship between independent and dependent variables?

Back

The independent variable is manipulated to observe its effect on the dependent variable, which is measured.