25-26 8th Grade Science Universe IFA Study Guide

Front

Why would no one on Earth know if Polaris went supernova today?

Back

It would take the light 434 years to reach the Earth.

Front

Which statement about the universe is NOT correct?

Back

The universe contains billions of galaxies.

Front

Why can't Venus support life as we know it?

Back

Venus' surface temperature is about 480°C.

Front

Which sentence is true about Polaris and the Sun?

Back

Polaris seems smaller than the Sun because it is farther away.

Front

The MAIN difference between terrestrial planets and gas giants is

Back

the level of their density.

Front

What would happen to the planets in the solar system if the Sun’s gravitational force were to suddenly disappear?

Back

They will fly away in straight lines.

Front

Why does the Sun appear much larger and brighter from Earth than blue giant stars?

Back

It is closer.

Front

A ____________ is a large, bright, gaseous feature extending outward from the Sun's surface, often in a loop shape.

Back

prominence

Front

This is defined as a sudden, intense variation in brightness that occurs when magnetic energy that has built up in the solar atmosphere is suddenly released. Radiation is emitted across the entire electromagnetic spectrum.

Back

solar flare

Front

What property of Venus makes it the "hottest" planet and an exception to the rule that temperatures decrease with distance from the sun?

Back

Its thick carbon dioxide atmosphere causing a strong greenhouse effect.