Matter and Interactions
Copper can be stretched out into wires and used to carry electricity. It is shiny and it can be hammered into flat pieces. What type of material is copper?
It is a metal
A leaf falls off a tree. How does gravity act on the object?
Pulls towards the Earth
What provides plants the physical matter they needs for growth?
Sunlight and water
Why is the Sun is the brightest star in the night sky?
It is the closest star to Earth, making it appear the brightest.
Every day at 9am, Tia records the number of flies captured by a group of Venus Flytraps. Which of the following could improve her study?
A. Collect her data at 9pm instead of 9am.
B. Collect her data at 9am and 9pm each day.
C. Collect her data only on cold days.
D. Collect her data only on Mondays.
B. Collect her data at 9am and 9pm each day.
Charlotte placed salt water in a beaker and left it on her desk for a week. After a week, there was only salt. What happened to the water?
When 2 forces of equal strength act on an object, are the forces balanced or unbalanced?
Balanced Forces
When considering how living things need food to survive, how would we classify a giraffe? (Producers, consumers or decomposers?)
Consumer--giraffes "chew" their food.
Which is the process in which water falls from the sky?
Precipitation
Molly believes the wings of a species of butterflies are larger next to a pond by her home, than deep in the woods by her school. Which tool would best help her in her research?
Ruler / tape measure / yard stick
Avery added baking soda to vinegar in a glass flask. It began to bubble when it reacted. In the end, she was left with water and carbon dioxide. Which of the following is true?
A. It was a physical change since new substances were formed
B. It was an example of precipitation.
C. It was a chemical change since new substances were formed.
D. It was a physical change since she changed the substances physically.
C. It was a chemical change since new substances were formed.
In what situation would a magnet attract another magnet?
When north and south poles are next to each other.
What is the term used to describe how plants make their own food?
Photosynthesis
Where is the largest supply of freshwater on Earth?
Glaciers
Which is an example of “constraint?”
A. Construct a structure that stands 6 inches off the ground
B. Only 3 pieces of paper and 2 pieces of tape will be provided
B. Only 3 pieces of paper and 2 pieces of tape will be provided
Thurston Howell placed a glass of liquid water outside on a very cold night in Alaska. The next day, the water was solid ice. What caused this to happen?
A. The particles of water slowed down and the water froze.
B. The particles of water sped up and the water froze.
C. The water evaporated when the particles of water sped up.
D. It was a chemical change.
A. The particles of water slowed down and the water froze.
What force slows objects down?
Friction
A grasshopper eats plants. A cat eats the grasshopper. What is the starting source of the energy in this situation?
The sun! It provides energy to the plants, which the animals eat!
Which process causes water to rise into Earth’s atmosphere?
Evaporation
Tommy was testing the speed of a toy car on a ramp. He recorded the speed of the car each time he changed the slope of the ramp. Which would summarize his results the best?
A. Decrease the slope, speed increases.
B. Increase the slope, speed decreases.
C. Increase the slope, speed increases.
D. The slope does not change the speed.
C. Increase the slope, speed increases
Artie Bucco is using a frying pan. What type of material would best be used for the pan? Why?
Metal, since it conducts heat really well.
False! 2 forces are always acting on objects.
How do nutrients from dead organisms return to the soil of Earth?
Decomposers break down matter and return it to the soil.
What is the process of a gas turning into a liquid?
Condensation
How many changes are you allowed to make in an experiment?
Only 1 at a time!