8th STAAR Review Science Day 1

Front

What is the energy change when a match is rubbed against sandpaper and starts to burn?

Back

The chemical energy stored in the match changes to thermal energy and light energy.

Front

List the components of the universe from smallest to largest.

Back

Planets, stars, nebulae, galaxies.

Front

What is essential to accurately predict when a comet will collide with a planet?

Back

Understanding the gravitational attraction that exists between all bodies.

Front

Why does the sun appear brighter than a giant runaway star when viewed from Earth?

Back

The sun is closer to Earth than the runaway star.

Front

Define chemical energy.

Back

Energy stored in the bonds of chemical compounds, which can be released during a chemical reaction.

Front

What is thermal energy?

Back

The energy that comes from the temperature of matter; it is the total kinetic energy of particles in an object.

Front

Explain gravitational attraction.

Back

The force that attracts two bodies toward each other, proportional to their masses and inversely proportional to the square of the distance between them.

Front

What is a nebula?

Back

A giant cloud of dust and gas in space, often the birthplace of stars.

Front

Define a galaxy.

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

Front

What is the role of the Hubble Space Telescope?

Back

To observe astronomical objects and phenomena beyond the capabilities of ground-based telescopes.