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Worksheets3rd Grade Science LEAP Prep
Total questions: 45
Worksheet time: 53mins
This box is sitting on a table. You want to understand the changing forces that act on the box. Which of the following investigations would help you do this?
Describe the direction the box is pushing on the table.
Observe that the box is not moving. That means there are no forces acting on it.
Hang weights from the hook. The weights will push on the box.
Hang weights from the hook. The weights will pull on the box. The box will slide to the end of the table.
Vincent wants to move an object using touching forces. Which test will show that touching forces will move objects?
He could drop a feather from several different heights and see how fast it falls.
He could pull a toy car with a string until it hits another toy car.
He could rub a ballon on his shirt and hold it over his head to make his hair stand up.
He could use a magnet to pull a stack of paper clips from one end of the table to another.
Click on the picture of a person kicking a soccer ball. The picture shows the path of the ball. Predict how the path of the ball will continue after step 5.
It will go up.
It will go down.
It will go backward.
It will stay in the air.
Elena wants to investigate how patterns can be used to predict how an object will move. She attaches a string to a ball and pulls it back. Look at the picture below that shows this. What can the student predict that the ball will do after it swings to the left side?
It will stay on the left side.
It will move higher each time it swings to either side.
It will swing to the right side and then back to the left.
It will stop in the middle before it reaches the right side.
Anna is learning about magnets. She wants to set up these magnets so they repel one another. Will this set up, shown above, repel the magnets? Explain.
Yes, since the opposite sides of the magnets are facing each other, they will repel each other.
Yes, since the same sides of the magnets are facing each other, they will repel each other.
No, because the opposite sides of the magnets are facing each other.
No, because the same sides of the magnets are facing each other.
A group of science students needs to teach their classmates about non-touching forces. They will do this by showing them a demonstration. To come up with ideas for their demonstration, the students come up with questions about non-touching forces. Which student asks the most useful question?
Elaine asks about how many different ways a magnet can slide on a table.
Paul asks what color each of the magnets’ sides are.
Arya asks if there is a way to make the magnets stronger.
Anthony asks if they can make magnets move toward each other.
Dora plans an investigation using one magnet to pick up a pile of metal paper clips. She already knows that the paper clips will stick to the magnet because the two objects attract. Which question can Dora answer by carrying out her investigation?
What materials are used to make a magnet?
Why do paper clips bend easily if they are made from metal?
At what distance will the magnet be able to pick up the paper clips?
What touching forces are making the paper clips stick to the magnet?
Leaders in a city want to sort through the city’s landfill to pick out metal cans that can be
recycled. It would take a long time to do this work by hand. Engineers decide to build a big
magnet to move above large piles of trash. Magnets attract metal. What do you think the
engineers believe will happen as a result of their plan?
The magnet will draw the metal cans up and out of the trash piles.
The magnet will cause the metal cans to move to the side into a neat pile.
The magnet will flatten and recycle the cans while they are being collected.
The magnet will use electricity to sort the metal cans from the nonmetal items.
Juan sets up three different magnets at different distances from metal paper clips. He collects data in the table below. What conclusion can Juan make by looking at his data?
Magnets will attract paper clips at any distance.
Magnets will attract paper clips the farther they are from the magnet.
Magnets will attract paper clips that are made of nonmetal.
Magnets will attract paper clips that are closer to the magnet.
Gia bounces a ball across a playground. Each time the ball bounces, it goes less high in the air. When the ball reaches the middle of the playground, it only bounces half as high as it did on the first bounce. What would most likely happen by the time the ball reaches the far side of the playground?
The ball would pick up speed.
The ball would soon stop bouncing.
The ball would stay in the air longer.
The ball would roll back to the student.
Sometimes forces are balanced, such as when an object stands still. Other times forces are unbalanced, such as when an object moves or falls. Look at the boulder in front of the cave. Which of the following sentences about the forces
acting on the boulder is true?
The forces are balanced, it is not moving.
The forces are unbalanced, it is hard.
There are no forces acting on the boulder. It is heavy.
Imagine a group of scientists wants to get inside the blocked cave. The boulder will need to be moved. First, the scientists must identify the type of force that is acting on the boulder. There are different kinds of forces. Use the correct word from the word bank to complete the sentence. The boulder that is blocking the cave is being kept in place by __________.
gravity
a push
a pull
The scientists realize that lifting the boulder off the ground will give them the most access to the cave. What kind of force would they need to use to lift the boulder off the ground? Choose the best answer.
a force that is similar to gravity
a force that is weaker than gravity
a force that is stronger than gravity
a force that is just as strong as gravity
A crane is used to lift heavy objects off the ground. The magnetic crane will hold a big magnet over the boulder. The side of the magnet facing the rock is S. Use the correct words from the choices to complete the sentences below.
A crane can move the boulder if a magnet is attached to the boulder. The side of the magnet on the bolder facing the crane must be _______ the side of the magnet on the boulder S. Then the crane places the magnet directly over the boulder. The magnet on the crane would _______ the magnet on the boulder.
opposite
pull
push
not affect
the same
How do cats get the trait of polydactyly or extra toes?
Inheritance
Environment
Both Inheritance and Environment
Why are Mrs. Drake's legs so sunburned?
Inheritance
Environment
Both Inheritance and Environment
How many eggs a snowy owl lays is a trait that comes from...
Inheritance
Environment
Both Inheritance and Environment
How did the redwood tree gets its height?
Inheritance
Environment
Both Inheritance and Environment
How did I get the scar on my arm?
Inheritance
Environment
Both Inheritance and Environment
How does the grizzly bear know how to catch fish in its mouth by waiting in just the right spot for the fish to leap?
Inheritance
Environment
Both Inheritance and Environment
How do flamingos turn pink?
Inheritance
Environment
Both Inheritance and Environment
How does the sparrow sing its song?
Inheritance
Environment
Both Inheritance and Environment
How does the decorator crab get its trait of spiky shell?
Inheritance
Environment
Both Inheritance and Environment
How do fruit flies have the trait of long wings?
Inheritance
Environment
Both Inheritance and Environment
How did you get your trait of having either freckles or no freckles?
Inheritance
Environment
Both Inheritance and Environment
How does the vervet monkey know the different alarm calls?
Inheritance
Environment
Both Inheritance and Environment
The amount of time it takes a peppered moth to turn from a caterpillar to a moth is because of ______________.
Inheritance
Environment
Both Inheritance and Environment
Wolff 44 has light colored fur because ___________.
Inheritance from the Elk Mountain Pack wolves
Inheritance from the Bison Valley Pack wolves
Environment from the Elk Mountain Pack wolves
Environment from the Bison Valley Pack wolves
Both Inheritance and Environment
How does Wolf 44 get his trait for hunting?
Inheritance from the Elk Mountain Pack wolves
Inheritance from the Bison Valley Pack wolves
Environment with the Elk Mountain Pack wolves
Environment with the Bison Valley Pack wolves
Both Inheritance and Environment
Check all the boxes below that are true about why Wolf 44 is medium sized.
Wolf 44 is medium sized because he did not inherit body size traits to be as big as the wolves in the Elk Mountain pack.
Wolf 44 eats 5 lbs. of bison per day.
Wolf 44 hunts in small groups of up to 4 wolves.
Wolf 44 eats 8 lbs. of elk per day.
Wolf 44 hunts in large groups of up to 10 wolves.
Why is Wolf 44 bigger than the wolves in the Bison Valley Pack, but smaller than the wolves in the Elk Mountain pack?
Inheritance
Environment
Both Inheritance and Environment
A ___________ is an animal that hunts and eats other animals.
prey
structure
variation
predator
To __________ is to stay alive.
design
engineer
survive
inference
Making it easier for an organism to meet its needs in an environment is
criteria
adaptive
design
engineer
____________ is getting engineering ideas from organisms traits.
explanation
inference
biomimicry
desing
Tiger is in charge of trying to design new ways of solving problems using what he knows about science. Tiger is probably
a teacher
a designer
an engineer
a predator
The folks in the Alaskan wilderness have to hunt and fish for food, because there are no stores. They have noticed less moose in the area. They think it is because there is not enough food for them. How can test their claim?
They can check the area for food the moose usually eat.
They can look somewhere else for moose.
They can try to attract moose with a new type of food.
They should just eat fish.
In our last unit, we learned about Wolf 44's hunting style. He hunted elk in packs of 4. Wolf 44 is
prey
a predator
an engineer
an adaptation
When you figure something out based on observations and what you already know, this is called
an inference
an environment
an adaptation
an organism
Calvin loves to tear into bags of chips. Today when I got home, there were chips all over the floor. What can I infer?
Natalie spilled the chips.
Kono ate the chips.
Calvin tore into the chips again!
Nugget put the chips all over the floor.
______________ is a group of the same kind of organism living in the same area.
an organism
an animal population
an adaptive engineer
a biomimcry investigation
When something is_____________ it makes it harder for the organism to meet its needs in an environment.
reproduced
a predator
stubborn
non-adaptive
Why might an organism be less likely to survive in an environment. Choose 3correct answers.
It may not have enough food and water.
There is enough food and water in the environment.
It may have too much water.
There may be too many predators.
There may be no place to hide from predators.
This plant needs water, sunlight, and good soil to grow well. Based on this picture what you can you infer? Choose 2 correct answers.
The plant had plenty of water.
The plant had too much water.
The plant sat in the sun all day.
The plant didn't get enough sunlight.
The soil didn't have enough food for the plant.
The beaver population in this area is growing like crazy! What can you assume about its environment? Choose 3 correct answers.
There is enough food.
There is no place to hide.
There aren't too many predators.
There is enough water.
There is not enough food or water.
