144 Test 1 Review

The knowledge of the Earth being round was not discovered until recently.

• True

• False

The Earth is slowly precessing over time, which means

• there is convection in the mantle which causes volcanos to explode

• the orbit of Earth will eventually shift completely away from the Sun

• the moon will eventually come crashing down on the Earth

• the north star Polaris will not be the north star in the future

A rocket blasting off from the a planet needs a speed of 20 m/s in order to escape the planet's gravity. How fast would a small package need to move in order to escape the same planet's gravity?

• Higher than 20 m/s

• Lower than 20 m/s

• 20 m/s

• Need more information

Which of the following would be considered the peak frequency given off by the highest temperature blackbody?

• X-ray

• Gamma Ray

• Ultra violet

• Radio Waves

Which of the fundamental forces of nature is the weakest?

• Strong nuclear force

• Weak nuclear force

• Electromagnetic force

• Gravitational Force

Which of the fundamental forces of nature holds together the nucleus of an atom?

• Strong nuclear force

• Weak Nuclear force

• Electromagnetic force

• Gravitational force

An isotope of an element is

• An element with a different number of electrons

• An element with a different number of protons

• An element with a different number of neutrons

• An element with a different number of energy levels

Which kind of telescopes would work well on the surface of the Earth?

• Ultra-violet

• X-ray

• Gamma-Ray

• Radio

As the Earth orbits the sun, the speed at which it moves is a constant.

• True

• False

What kind of electromagnetic waves are not harmful to biological life?

• Ultra violet

• X-ray

• Gamma Ray

• Microwaves