AGMS 8TH SCI INT MIDTERM 2024

Front

What is the chemical formula for sodium sulfate?

Back

Na₂SO₄

Front

Which elements are present in Na₂SO₄ and how many atoms of each?

Back

2 sodium atoms, 1 sulfur atom, and 4 oxygen atoms.

Front

What causes ocean tides?

Back

The gravitational pull of the Moon and the Sun on Earth's oceans.

Front

When are ocean tides highest?

Back

During a full moon when the Sun, Moon, and Earth are in alignment.

Front

What keeps the Moon in orbit around the Earth?

Back

Earth's gravity.

Front

How do the characteristics of stars vary?

Back

Stars can differ in temperature and brightness.

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, where star formation begins.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a low or medium mass star.

Front

What is a supergiant star?

Back

A supergiant is a very large star that is much brighter than the Sun.

Front

What is a main-sequence star?

Back

A main-sequence star is a star that is in the stable phase of its lifecycle, fusing hydrogen into helium.