Explain Speed of Earth Events - 2nd Grade Science
Card 1 of 15
What is a source when you gather evidence about Earth events (for example, a photo or a text)?
What is a source when you gather evidence about Earth events (for example, a photo or a text)?
Tap to reveal answer
A place where information comes from, such as a photo, map, or text. Sources provide the evidence scientists use to study Earth events.
A place where information comes from, such as a photo, map, or text. Sources provide the evidence scientists use to study Earth events.
← Didn't Know|Knew It →
Which option is usually a quick Earth event: earthquake or weathering of rock?
Which option is usually a quick Earth event: earthquake or weathering of rock?
Tap to reveal answer
Earthquake. Earthquakes shake the ground in just seconds or minutes.
Earthquake. Earthquakes shake the ground in just seconds or minutes.
← Didn't Know|Knew It →
Which option best describes erosion: breaking rock into pieces or moving pieces away?
Which option best describes erosion: breaking rock into pieces or moving pieces away?
Tap to reveal answer
Moving pieces away. Erosion transports weathered material away.
Moving pieces away. Erosion transports weathered material away.
← Didn't Know|Knew It →
Which option is usually slow: deposition building a sandbar or a landslide?
Which option is usually slow: deposition building a sandbar or a landslide?
Tap to reveal answer
Deposition building a sandbar. Sand builds up grain by grain over many years.
Deposition building a sandbar. Sand builds up grain by grain over many years.
← Didn't Know|Knew It →
Which option is usually quick: a landslide or a canyon forming by river erosion?
Which option is usually quick: a landslide or a canyon forming by river erosion?
Tap to reveal answer
A landslide. Landslides move tons of rock and soil in minutes.
A landslide. Landslides move tons of rock and soil in minutes.
← Didn't Know|Knew It →
Identify the best evidence type to show a slow change in a coastline over years.
Identify the best evidence type to show a slow change in a coastline over years.
Tap to reveal answer
Photos of the same place taken years apart. Time-lapse photos reveal gradual changes invisible day-to-day.
Photos of the same place taken years apart. Time-lapse photos reveal gradual changes invisible day-to-day.
← Didn't Know|Knew It →
Identify the best evidence type to show a quick change right after an earthquake.
Identify the best evidence type to show a quick change right after an earthquake.
Tap to reveal answer
Before-and-after photos taken close in time. Quick events need photos taken hours or days apart.
Before-and-after photos taken close in time. Quick events need photos taken hours or days apart.
← Didn't Know|Knew It →
Which option is the strongest evidence that a river slowly eroded land: one photo or many photos over time?
Which option is the strongest evidence that a river slowly eroded land: one photo or many photos over time?
Tap to reveal answer
Many photos over time. Multiple photos prove the change happened slowly over time.
Many photos over time. Multiple photos prove the change happened slowly over time.
← Didn't Know|Knew It →
What is a slow Earth event (slow change) in terms of how long it takes?
What is a slow Earth event (slow change) in terms of how long it takes?
Tap to reveal answer
An Earth change that happens over many years or longer. Slow events take so long we can't see them happening day-to-day.
An Earth change that happens over many years or longer. Slow events take so long we can't see them happening day-to-day.
← Didn't Know|Knew It →
What is a quick Earth event (fast change) in terms of how long it takes?
What is a quick Earth event (fast change) in terms of how long it takes?
Tap to reveal answer
An Earth change that happens in seconds, minutes, or hours. Quick events happen fast enough to watch them occur.
An Earth change that happens in seconds, minutes, or hours. Quick events happen fast enough to watch them occur.
← Didn't Know|Knew It →
What does the word gradually mean when describing an Earth change?
What does the word gradually mean when describing an Earth change?
Tap to reveal answer
Slowly, little by little over time. Gradual changes happen so slowly you can't see them happening.
Slowly, little by little over time. Gradual changes happen so slowly you can't see them happening.
← Didn't Know|Knew It →
What does the word suddenly mean when describing an Earth change?
What does the word suddenly mean when describing an Earth change?
Tap to reveal answer
Quickly, in a short time. Sudden changes happen fast enough to surprise you.
Quickly, in a short time. Sudden changes happen fast enough to surprise you.
← Didn't Know|Knew It →
Choose the correct label for a change that happens in minutes: quick event or slow event?
Choose the correct label for a change that happens in minutes: quick event or slow event?
Tap to reveal answer
Quick event. Minutes are too short for slow geological processes.
Quick event. Minutes are too short for slow geological processes.
← Didn't Know|Knew It →
Which event is most likely slow: mountain building or a thunderstorm?
Which event is most likely slow: mountain building or a thunderstorm?
Tap to reveal answer
Mountain building. Mountains form from tectonic forces acting over millions of years.
Mountain building. Mountains form from tectonic forces acting over millions of years.
← Didn't Know|Knew It →
What is the correct way to use evidence from a source to support a claim about speed?
What is the correct way to use evidence from a source to support a claim about speed?
Tap to reveal answer
State the claim and cite the source detail that shows the time scale. Good evidence includes both what happened and when it happened.
State the claim and cite the source detail that shows the time scale. Good evidence includes both what happened and when it happened.
← Didn't Know|Knew It →