UIL Science Oct 20 '18 Test

Front

What does the prefix 'dendr' mean?

Back

The prefix 'dendr' means 'trees.'

Front

What can solar winds from the sun disturb?

Back

Solar winds can disturb satellites, spacecraft, and the Earth’s electric-power grid, as well as technology on Earth.

Front

What is a reasonable density for the Earth’s core?

Back

A reasonable density for the Earth’s core is 11.0 g/cm3.

Front

What is the atomic number of Calcium?

Back

Calcium has an atomic number of 20.

Front

What is the chemical symbol for Calcium?

Back

The chemical symbol for Calcium is 'Ca'.

Front

What is not true about Calcium?

Back

Calcium is not a member of Period 3; it is actually in Period 4.

Front

What instrument measures the magnitude of an earthquake?

Back

An instrument that measures the magnitude of an earthquake is called a seismograph.

Front

What is a solar flare?

Back

A solar flare is a sudden eruption of radiation from the sun's surface.

Front

What is the definition of density?

Back

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

Front

What is the role of solar winds?

Back

Solar winds carry charged particles from the sun into space, affecting planetary atmospheres.