Forces
Rotation
Revolution
Stars
Random
100
What is gravity?
Gravity is a force that pulls things towards the center of earth.
100
The drawing shows the sun at a certain time of day. What is a probable time in this picture?
1:00pm (or a time in the range of 12-3pm)
100
How long does it take earth to complete one revolution around the sun?
Approximately 365 days. It takes one year for the earth to orbit around the sun.
100
A ____________ is a pattern of stars that forms an imaginary picture or design in the sky.
Constellation
100
Why does the star Betelgeuse, a star bigger and brighter than other stars, appear to be the dullest when you look at a picture of it from Earth?
Betelgeuse looks like a dim star because it is farthest from Earth.
200
Which image correctly shows a model of Earth and the direction of the force of gravity?
200
________ is an imaginary line that runs through Earth from pole to pole. Earth spins on this imaginary line, in what is called a rotation.
Axis
200
The graph below shows the pattern of daylight hours throughout the year. Which season represents the hours of daylight in the summer months of the United States?
Season 3
200
Based on this picture, why can’t we see Pegasus in our night sky in spring?
Pegasus is located on the opposite
side of the sun from where Earth is
located during springtime.
200
How much of earth will experience daylight at any given time?
Approximately half of the earth
300
These people are located in Australia. If one of them dropped his or her phone, which way would it fall? Explain your answer.
The phone would fall towards the ground, towards the center of earth.
300
How long does it take for earth to complete one rotation?
It takes 24 hours to complete one rotation, causing a day-and-night cycle.
300
Why are we able to see Ursa Minor in every season?
Ursa Minor is located high “above”, or to the north of, the sun, so it is visible high in the sky from the Northern Hemisphere no matter what season we are in.
300
What factor affects how bright a star appears when observed from Earth?
DISTANCE
The further away a star is from earth, the dimmer it appears. The closer a star is to earth, the brighter it appears.
300
You learned that Earth’s rotation is responsible for many changes we see in the sky each day. Which of the following movements seen is not caused by Earth’s rotation?
a. sun
b. clouds
c. stars
d. shadows
CLOUDS
400
Mason throws his baseball straight up into the air on a day that is not windy. How will gravity affect the movement of the baseball?
Gravity will pull the baseball down towards the center of the planet.
400
During what time(s) of day can we observe the longest shadows?
During early mornings (sunrise) and late evening (sun sets) due to the low altitude (angle) of the sun in the sky.
400
Explain why the constellations we see in the night sky changed. Keep in mind that we are viewing the sky at the same time each night.
Due to the earth orbiting around the sun, we can only see certain stars during specific seasons in the year. In other seasons, our view of certain stars is blocked by the sun.
400
What are the two main characteristics of a star?
Made of hot glowing, gases
Produces own light
400
If the moon and other planets also don’t make their own light, why do they appear bright in the night sky?
The moon and other planets appear bright in the sky because they reflect sunlight.
500
You are standing on a beach watching a ship sailing across the ocean. What could you do to be able to watch the ship longer before it disappears across the horizon?
Walk north across the beach.
Wade out into the water.
Climb to the top of a building.
Lie down and look across the surface of the water.
C. Climb to the top of a building.
500
What causes the apparent movement of stars across the sky in one night?
Earth’s rotation (spinning on its axis) causes the stars to appear to move across the sky.
500
During which season does the sun appear highest in the sky at noon?
SUMMER. Due to the fact that the sun appears highest in the sky at noon in the summer, the sun is seen in the sky for longer periods of time, increasing the amount of daylight we experience.
500
Why does the sun appear larger and brighter than other stars in our sky even though it is actually smaller and dimmer?
The sun appears larger and brighter than the stars shown because it is closer to Earth.
500
The calendar indicates major phases of the moon for April. When will the next full moon
occur after this month?
a. May 20
b. May 5
c. May 31
d. June 3
May 20